Arizona Diamondbacks second baseman Ketel Marte (knee) is tentatively expected to be activated from the 10-day injured list next Tuesday, when the team opens a series against the visiting Philadelphia Phillies, according to Francys Romero. Marte started rehabbing his injured knee on Monday at the team's spring training complex in Arizona. The team placed Marte on the restricted list last Monday after he did not show up to Fenway Park for the series opener against the Boston Red Sox, but it turned out he was headed back to Arizona to have an MRI exam on his bothersome left knee. It was a bizarre situation for the D-backs' coaching staff last week, but the good news for fantasy managers is that they should have the All-Star second baseman back in the fold early next week, barring a setback. The 32-year-old Dominican switch-hitter will be returning to a .249/.314/.446 slash line with 21 homers, 67 RBI, 65 runs scored, and four steals as a must-start in traditional fantasy leagues when he is active. Marte has struggled so far in the second half, hitting .225 (22-for-98) with a .712 OPS, four homers, four doubles, 13 RBI, 14 runs scored, 12 walks, and 20 strikeouts in 26 games played.

Miami Marlins right-hander Max Meyer (neck, rib) is still in no-throw status as he rehabs in Jupiter, Florida, according to Christina De Nicola of MLB.com. The Marlins initially placed Meyer on the 15-day injured list to begin the second half of the season in late July with a neck strain, but he then injured his rib and needed a cortisone injection. He continues to rehab in Florida, but at this point in the season, it is fair to wonder if he will have enough time to build up his arm and rejoin Miami's starting rotation for the final month of the regular season in September. It's frustrating for fantasy managers who have been holding the 27-year-old, who has gone 9-1 this year with a 2.68 ERA (3.49 FIP) and 1.13 WHIP with a career-high 121 strikeouts and 41 walks in 111 innings pitched across 20 starts in his fourth season in the big leagues. Meyer was a first-time All-Star after a strong first half, but he has so far been unable to help fantasy managers in the second half. Folks are still holding out hope that he can return in 2026, as he is rostered in 71% of Yahoo leagues at the moment.

The Miami Marlins announced on Monday that they reinstated outfielder Kyle Stowers (hamstring) from the 10-day injured list and optioned infielder Deyvison De Los Santos to Triple-A Jacksonville in a corresponding move. Stowers is starting at first base on Monday and will hit third in the batting order against Boston Red Sox left-hander Ranger Suarez. The left-handed power hitter returns to Miami after missing around two weeks due to a Grade 1 strained left hamstring. He could be a bit rusty at the plate upon his return after not going on a minor-league rehab assignment, and he is also facing a lefty on Monday. The 28-year-old former second-round pick by the Baltimore Orioles in 2019 from Stanford University will return to a .242/.327/.462 slash line with a .788 OPS, 16 homers, 52 RBI, 44 runs, and one stolen base in his 351 at-bats in 2026. Fantasy managers setting DFS lineups will want to avoid Stowers in his return, as he is hitting only .169 (13-for-77) with one of his 16 home runs and 27 strikeouts in 86 plate appearances versus lefties this year.

Athletics infield prospect Leo De Vries (shoulder) is dealing with a sore right shoulder and is currently rehabbing in Arizona, according to Martin Gallegos of MLB.com. He is sidelined from throwing for four weeks and is on the seven-day injured list at Double-A Midland. It means that the No. 2 overall prospect in baseball, per MLB Pipeline, will not play again this season. The 19-year-old Dominican switch-hitter spent his entire 2026 season at Midland, where he slashed .290/.378/.458 with an .836 OPS, 13 home runs, 55 RBI, 34 stolen bases, and 63 runs scored across 93 games and 428 plate appearances. If he is ready later this year, De Vries is an obvious candidate to play in the Arizona Fall League as he continues his development. The 6-foot, 183-pounder should already be stashed in all dynasty/keeper leagues, and he should be popular in redraft leagues to begin the 2027 campaign if he has a realistic chance to earn an Opening Day roster spot out of spring training. De Vries already has an advanced approach at the plate for his age and has high-end power/speed abilities at the premium shortstop position.