Arizona Diamondbacks rookie left-hander Blake Walston will receive the start on Tuesday against the visiting division-rival San Francisco Giants. This will be Walston's third MLB appearance and just his second major-league start after making his big-league debut on May 1 against the Los Angeles Dodgers. In his first start on May 26 against the Miami Marlins, he tossed 4 2/3 scoreless frames with one walk and four strikeouts to pick up a no-decision. The 22-year-old southpaw could see another start after this one if he fares well again, as the D-backs currently have Zac Gallen (hamstring), Merrill Kelly (shoulder) and Eduardo Rodriguez (shoulder) all on the injured list. Walston is the club's No. 25 prospect, per MLB Pipeline, and will have a pretty middling matchup against the Gigantes in his second career start.

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The Washington Nationals placed right-hander Trevor Williams (forearm) on the 15-day injured list (retroactive to June 1) on Tuesday with a right flexor strain and recalled left-handed pitching prospect DJ Herz from Triple-A Rochester in a corresponding move. Williams was scheduled to make the start on Tuesday against the visiting division-rival New York Mets, but that task will now fall to Herz in what will be his major-league debut. Given the nature of Williams' injury, the 32-year-old veteran will likely be out for more than two weeks. It's a tough blow for the Nats and fantasy managers, as Williams has been unexpectedly consistent so far in 2024, going 5-0 with a 2.22 ERA and 1.08 WHIP with 47 punchouts in 56 2/3 innings over his 11 starts.

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The Toronto Blue Jays announced that right-hander Trevor Richards will serve as the team's opener on Tuesday night against the visiting Baltimore Orioles, with right-hander Bowden Francis (forearm) expected to get the bulk of the innings in relief. Francis will be activated off the 15-day injured list for the assignment. Richards tossed 3 1/3 innings of relief last week against the Chicago White Sox and has gone more than an inning in seven of his 25 relief appearances this year, but fantasy managers looking for a streamer should still avoid the 31-year-old veteran. His last appearance came on Sunday against the Pirates. Francis, 28, has been out since late April with forearm tendonitis and had an ugly 8.59 ERA and 1.70 WHIP with 17 K's and seven walks in 14 2/3 innings for Toronto before going on the IL. Francis will be on a limited pitch count and should be avoided for streaming purposes.

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The Minnesota Twins officially reinstated infielder Royce Lewis (quadriceps) from the 10-day injured list on Tuesday and optioned infielder Edouard Julien to Triple-A St. Paul in a corresponding move. Lewis suffered a serious strained right quadriceps muscle on Opening Day but is now ready to return after 10 weeks of rehab. The Twins haven't released their starting lineup for Tuesday's game against the New York Yankees in the Bronx, but Lewis should be in it, and fantasy managers should be ready to throw him right back in there. The 24-year-old power/speed asset went 4-for-23 with eight strikeouts and a walk in 24 plate appearances during his six-game minor-league rehab assignment for St. Paul. Injuries have kept Lewis from reaching his true potential since he was the first overall pick in 2017, but the upside is still very high. Scoop him up immediately if he's somehow available in your league.

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Milwaukee Brewers right-hander Colin Rea will work behind an opener on Tuesday against the Philadelphia Phillies on the road. It's unclear who the Brewers will use as the opener after going with Jared Koenig on Monday. Rea, 33, worked as the team's bulk reliever behind Koenig on May 25 against the Boston Red Sox and allowed two earned runs with three walks and two strikeouts in 5 2/3 frames in a win. In his last outing on May 30 against the Chicago Cubs, Rea had a no-decision while working 5 1/3 frames and allowing one earned run on one walk and five K's. Rea has had a solid campaign thus far for the Brew Crew, going 4-2 with a 3.77 ERA and 1.34 WHIP with 42 strikeouts in 59 2/3 innings over 11 outings (10 starts), but the matchup on Tuesday against the Phils on the road is one to fade him in.

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Toronto Blue Jays first base prospect Spencer Horwitz posted a stellar .375/.468/.650 line through his final 11 games of the month to cap off a productive May. Across the entire month, the 26-year-old posted a strong .299/.395/.439 line with 16 RBI and a 15:22 BB:K ratio. Horwitz made his major league debut and performed well across a small 15-game sample size with a .256 AVG. Over the past three seasons, the Radford product logged 205 games at the Triple-A level and should be expected to have an extended opportunity in Toronto this summer. The number 16th-ranked prospect in the Toronto system could be worth adding in AL-only leagues when given the promotion.

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Houston Astros infield prospect Zach Dezenzo (wrist) was sent on his rehab assignment on Monday. The team's No. 4 prospect will begin his assignment at the Rookie-level Florida Complex League. In 2023, Dezenzo split his time between High-A Asheville and Double-A Corpus Christ where he combined to hit .304 with 18 homers, 61 RBI and 22 stolen bases. Dezenzo has shown good pop in his bat throughout his career, but he has also struggled with off-speed pitches and plate discipline. These are issues that could hopefully be corrected on the farm and if they do, Dezenzo could be an option to replace free-agent to be Alex Bregman at third base in 2025. He remains an option in only dynasty leagues for now.

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Houston Astros general manager Dana Brown spoke to the media on Monday about the club's No.1 prospect, outfielder Jacob Melton (wrist), who has been sidelined since May 22 with a tweaked wrist. Brown said that he expects the 23-year-old to be back within a week or so. Prior to his injury, Melton was hitting .268 with five homers and 24 RBI for Double-A Corpus Christi. Despite being the club's top prospect, Melton is likely to get time in Triple-A before making his big-league debut as soon as this summer or next season. For now, dynasty leagues hold the most amount of value for Melton.

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Los Angeles Dodgers pitching prospect River Ryan (shoulder) began his rehab assignment in the Rookie-level Arizona Complex League on Monday. Ryan has been sidelined on the 60-day injured list with right shoulder fatigue, but looked dominant in his return to the mound. Ryan tossed two scoreless innings with one walk and five strikeouts. It was a nice display for the club's No. 4 prospect per MLB Pipeline. In his previous two seasons on the farm, Ryan has worked mostly as a starting pitcher with a career-high 104 1/3 innings in 2023. The Dodgers are likely to bring him back slowly and he could be an option out of the bullpen this summer, but long-term, Ryan projects as a starting pitcher. As one of the better arms in a strong Dodgers system, Ryan remains a name for dynasty league managers to consider past this season.

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Arizona Diamondbacks shortstop and No. 1 prospect Jordan Lawlar is nearing a return to Triple-A Reno. Lawlar returned to action this past Friday after missing the entire season after undergoing surgery on his right thumb. Diamondbacks manager Torey Lovullo alluded to the fact that Lawlar will need to shake off some rust, but should find himself back in the big leagues when he is healthy. Lawlar, 21, is one of the most exciting prospects in the game and offers five-tool potential. The youngster made his big-league debut in 2023 for the Diamondbacks, but struggled with four hits in 31 at-bats. It was a very small sample size for Lawlar and managers shouldn't put too much stock into that performance. As one of the top prospects in the game, managers in all formats should be keeping tabs on his return as he has the ability to be a difference maker down the stretch. Once he returns, expect Kevin Newman and Blaze Alexander to see less playing time.

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After completing his rehab assignment, Cleveland Guardians pitching prospect Joey Cantillo has been reassigned to Triple-A Columbus. The left-hander had a nice spring before being sidelined with a strained hamstring. According to MLB Pipeline, Cantillo is the Guardians No. 10 prospect, moving up from No.19 in 2023. Cantillo has performed well in his professional career, but injuries have held him back. Cantillo rolled through the lower levels of the system, but had his worst ERA of his career at 4.64 for Columbus in 20 game (18 starts) last season. Cantillo has been an exciting strike thrower for the Guardians, but he will need to maintain his health first and foremost. If he is able to stay on the hill, there is a chance he gets the call to the big leagues sometime this summer.

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Houston Astros DH Yordan Alvarez turned in a big game in a 7-4 win over the St. Louis Cardinals on Monday. Alvarez went 2-for-3 with a double, a homer, a walk, two runs, and two RBI to help power Houston to the win. The veteran slugger is putting together another excellent season, hitting .287 with 12 doubles, 12 homers, 32 runs, 27 RBI, and three steals across 230 at-bats. Alvarez has been red-hot at the plate lately, batting .462 with three homers over his past seven games. He should be an everyday fixture in fantasy lineups.

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Cincinnati Reds outfielder Will Benson turned in an excellent night at the plate in a 13-3 win over the Colorado Rockies on Monday. Benson went 2-for-3 with a triple, two runs, and three RBI to help power Cincy to the blowout win. The 25-year-old outfielder has struggled this season, posting just a .205 batting average along with eight homers, 20 runs, 20 RBI, and eight steals across 176 at-bats. That being said, he's showing signs of life of late, hitting .385 over his past seven contests. With a skillset that blends power and speed, Benson is worth rostering in deeper fantasy leagues moving forward.

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Los Angeles Angels right-hander Carlos Estevez threw a scoreless ninth inning to preserve a 2-1 win over the San Diego Padres on Monday. Estevez needed just 10 pitches to send the Padres down in order on the way to earning his ninth save of the season. The 31-year-old has had an up-and-down season as the Angels' closer as he has a 4.50 ERA, 1.11 WHIP, and 18 strikeouts over 18 innings of work with three blown saves. While his ERA is an eyesore, Estevez is a source for saves and strikeouts and, as such, is worth a roster spot in fantasy leagues moving forward.

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San Diego Padres right-hander Matt Waldron turned in a solid performance in a 2-1 loss to the Los Angeles Angels on Monday. Waldron allowed just one run on two hits over 6 1/3 innings while striking out four and walking none. The right-hander emerged from the outing with a no-decision, keeping his record at 3-5 on the year. Waldron has been a pleasant surprise for the Padres this season, posting a 3.98 ERA, 1.26 WHIP, and 64 strikeouts over 63 1/3 innings of work. Since getting tagged for seven earned runs by the Arizona Diamondbacks back on May 5, Waldron has allowed just six total earned runs in his five subsequent starts. Waldron will look to stay hot in his next start, which is scheduled for Saturday against Arizona.

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San Francisco Giants outfielder Heliot Ramos stayed hot in his team's 4-2 loss to the Arizona Diamondbacks on Monday. Ramos went 2-for-4 with a solo homer in the losing effort, with his blast traveling 420 feet with an exit velocity of 105.8 MPH. The 24-year-old is off to a nice start for the Giants in 2024, hitting .295 with four homers, 10 runs, 17 RBI, and one steal across 88 at-bats. He's been swinging a hot bat of late, hitting .346 with two homers over his past seven contests. Ramos is worth a look in deeper fantasy leagues moving forward.

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St. Louis Cardinals outfielder Alec Burleson made his only hit count in a 7-4 loss to the Houston Astros on Monday. Burleson went 1-for-5 with a solo homer in the loss. The shot came off Justin Verlander in the first inning and traveled 363 feet with an exit velocity of 100.6 MPH. Burleson has shown some power this season, with seven homers across 170 at-bats for the Cards. Overall, he's batting .271 with 16 runs, 21 RBI, and two steals. Thanks to his solid contributions across the board, Burleson is worth starting in fantasy in favorable matchups moving forward.

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St. Louis Cardinals right-hander Kyle Gibson turned in a solid start in a 7-4 loss to the Houston Astros on Monday. Gibson allowed three runs on five hits over five innings while striking out eight and walking three. He managed to escape with a no-decision in the start, holding his record at 4-2 on the year. Gibson's eight strikeouts fell just one short of his season-high of nine which he set back on April 30 against the Detroit Tigers. Overall, Gibson has a 3.69 ERA, 1.23 WHIP, and 60 strikeouts over 70 2/3 innings of work in his first season with the Cardinals. He is worth a look as a streaming option in fantasy when he has favorable matchups.

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Baltimore Orioles right-hander Grayson Rodriguez turned in a quality start in a 7-2 win over the Toronto Blue Jays on Monday. Rodriguez allowed two runs (one earned) on seven hits over 6 2/3 innings while striking out four on the way to earning the win. The 24-year-old hurler has been excellent for the Orioles this season, posting a 6-2 record, 3.28 ERA, 1.30 WHIP, and 65 strikeouts over 57 2/3 innings of work. Rodriguez should remain in fantasy lineups for his next start, which is scheduled to come against the Tampa Bay Rays on Saturday.

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Toronto Blue Jays right-hander Kevin Gausman struggled in a 7-2 loss to the Baltimore Orioles on Monday. Gausman allowed six runs on six hits over 6 1/3 innings while striking out three and walking one. The veteran hurler struggled to keep the ball in the yard on Monday as he served up three homers to Baltimore batters on the way to taking the loss. The rough outing drops Gausman's record to 4-4, to go along with a 4.60 ERA, 1.34 WHIP, and 59 strikeouts over 60 2/3 innings of work. He will look to get back on track in his next start, which is scheduled for Saturday against the Oakland A's.

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