Castro will start in right field and bat seventh in Tuesday's game against Atlanta.

Castro will cover right field on the same day that Kyle Tucker was placed on the injured list due to a calf strain. While Tucker was out of the lineup for Monday's series opener, Seiya Suzuki drew the start in right field, and Castro played center field while Pete Crow-Armstrong occupied the designated-hitter spot. Crow-Armstrong should patrol center most days moving forward with Suzuki as the DH, which should open up right field for Castro on a near-everyday basis. Castro is batting just .164 in 24 games for the Cubs, but his playing time and fantasy value could get a temporary boost with Tucker on the IL.

Koss went 2-for-4 with two RBI, a run scored and a double in Monday's 11-5 win over the Diamondbacks.

Koss did most of his damage in the sixth inning, hitting a two-run double to right field before coming around to score. The 27-year-old infielder drew the start at second base after going four consecutive games without a plate appearance, delivering his 10th multi-hit performance of the season. He's slashing .258/.299/.361 with 20 RBI, 19 runs scored, three home runs and three stolen bases across 170 plate appearances in 67 games during the 2025 campaign.

Donovan (groin) will begin a rehab assignment with Double-A Springfield on Tuesday and could be activated from the 10-day injured list for this weekend's series in Milwaukee, Derrick Goold of the St. Louis Post-Dispatch reports.

Donovan took live batting practice Monday without issue and is slated to play six innings at second base in his first rehab game with Springfield on Tuesday. He will play at least one additional rehab game after that, and, if all goes well, might be back in the Cardinals lineup for their series opener Friday against the Brewers. Donovan has been sidelined since mid-August with a left groin strain.

Vargas started at first base and went 1-for-4 with a run scored in Monday's 11-5 loss to the Giants.

Vargas received the start at first base in the first game without the injured Tyler Locklear (elbow), who placed on the 10-day injured list Monday. The Diamondbacks are now without their top two first basemen, as Locklear joins Pavin Smith (quadriceps) on the IL. Arizona is expected to get by with a combination of Vargas, Tim Tawa and James McCann.

Keaschall went 3-for-6 with two RBI, a run scored and a stolen base in Monday's 12-3 victory over the Angels.

Keaschall kept producing Monday, turning in the third three-hit effort of his young career. The rookie second baseman has taken full advantage of his opportunities in the majors, batting .329/.409/.486 with an .895 OPS, 10 doubles, four homers and 24 RBI through 37 contests. While it's been a difficult year for the Twins as a whole, Keaschall has stood out as one of the bright spots and a player the franchise can be excited about moving forward.

Marte went 3-for-5 with a run scored in Monday's 11-5 loss to the Giants.

Entering Monday, Marte had gone 0-for-13 across his previous four games, though he had four walks in that span. The second baseman was able to get his bat going again with his first three-hit game since he had four knocks Aug. 13 versus the Rangers. Marte is at a .287/.388/.520 slash line with 25 home runs, 64 RBI, 79 runs scored and four stolen bases across 111 contests this season.

Albies went 1-for-4 with a solo home run in Monday's 4-1 win over the Cubs.

Albies continued his red-hot stretch, blasting his third homer already in the month of September. The second baseman had a .616 OPS as of Aug. 13, but it appears that he was saving his best for last as the season nears a close. Across his last 24 outings, Albies is hitting .337 with 14 extra-base hits, 21 RBI, 18 runs scored and three stolen bases to raise his OPS to .682 for the campaign.

Schneemann went 3-for-5 with a double, two RBI and two runs scored in Monday's 10-2 victory over Kansas City.

The 28-year-old posted his fourth three-hit game of the season in this contest and notched his 18th double. Schneemann entered Monday mired in a cold spell, slashing .094/.171/.219 in 35 plate appearances over his 10 previous games. He continues to play regularly in a strong-side platoon role, producing a .682 OPS with 11 homers, nine steals, 44 runs scored and 38 RBI across 115 total games.

Rivas will start at second base and bat ninth in Sunday's game against the Cardinals.

Since being called up from Triple-A Tacoma when the Mariners' active roster expanded from 26 to 28 men, Rivas has gone 3-for-10 with a pair of extra-base hits and two walks. Though the sample has been small, Rivas' performance appears to have at least temporarily allowed him to overtake Cole Young as Seattle's preferred option at the keystone. The switch-hitting Rivas will be included in the starting nine for the third time in four games, including a second straight matchup versus a right-handed starting pitcher (Miles Mikolas).

The Diamondbacks recalled Tawa (rib) from Triple-A Reno on Monday.

Tawa was placed on Reno's 7-day injured list Aug. 2 due to a fractured rib, but he was activated Wednesday and will now join the big club to contribute as a utility man. He'll join Arizona's 28-man active roster as a replacement for first baseman Tyler Locklear (elbow), who was placed on the 10-day IL.