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Matt Chapman 3B | SF
Giants' Matt Chapman: May not return this season
Chapman (abdomen) is scheduled to be evaluated by a specialist next week, Justice delos Santos of The San Jose Mercury News reports.
MRI imaging confirmed Monday that Chapman suffered a core muscle injury, and manager Tony Vitello said Tuesday that the veteran third baseman may require surgery, per delos Santos. A timeline for Chapman's return will likely emerge following his doctor's visit, but he could be lost for the season if he goes under the knife.
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Xavier Edwards 2B | MIA
Marlins' Xavier Edwards: Receiving Tuesday off
Edwards is out of the lineup for Tuesday's game against Atlanta.
Edwards' absence ends a run of 26 straight starts, during which he struggled to a .237/.321/.268 slash line with just two extra-base hits and five stolen bases. Javier Sanoja is handling the keystone Tuesday for Miami, which opens up the hot corner for Leo Jimenez.
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Felix Bautista RP | BAL
Orioles' Felix Bautista: Throws live BP
Bautista (shoulder) threw live batting practice Tuesday, Matt Weyrich of The Baltimore Sun reports.
Bautista is still working his way back from labrum and rotator cuff surgery and has a chance to make his 2026 debut toward the tail end of the season. The 31-year-old has pitched in just 35 games since the end of the 2023 campaign.
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Parker Mushinski RP | COL
Rockies' Parker Mushinski: Joins 40-man roster
The Rockies selected Mushinski from Triple-A Albuquerque on Tuesday.
Mushinski re-signed with the Rockies on a minor-league contract in March after being released a few days before. He has notched a 3.38 ERA with a 1.19 WHIP and a 46:17 K:BB through 48.0 innings at Triple-A during 2026. The lefty has not made an appearance in MLB since 2024, when he had a 6.55 ERA and a 1.45 WHIP across 11 innings.
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Jordan Walker RF | STL
Cardinals' Jordan Walker: Dealing with knee inflammation
Walker was scratched from the lineup for Tuesday's game against the Yankees due to right knee inflammation, Derrick Goold of the St. Louis Post-Dispatch reports.
Walker has posted three consecutive multi-hit performances to begin the month of August, but he'll have to miss Tuesday's contest while he tends to his knee. Nelson Velazquez will start in right field in Walker's place and bat fourth.
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Jakob Marsee CF | MIA
Marlins' Jakob Marsee: Ready for action Tuesday
Marsee (back) is starting in center field and batting sixth Tuesday against Atlanta.
The 25-year-old was scratched from Sunday's lineup versus the Mets due to back spasms, but he's good to go for Tuesday's series opener following Monday's team off day. Marsee has a .194/.293/.333 slash line with two doubles, a homer, three RBI and six runs in 14 games since the All-Star break.
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Nick Yorke 3B | PIT
Pirates' Nick Yorke: Beginning rehab assignment
Yorke (shoulder) is beginning a rehab assignment with Single-A Bradenton on Tuesday, Dominic Campbell of SI.com reports.
Yorke is currently on the Triple-A injured list and hasn't played since June 17 due to a shoulder issue. The 24-year-old opened the season with the Pirates but slashed just .197/.279/.276 with four extra-base hits, six RBI, six runs scored and a 7:17 BB:K across 86 trips to the plate before being demoted.
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Keibert Ruiz C | WAS
Nationals' Keibert Ruiz: Idle Tuesday
Ruiz isn't in the lineup for Tuesday's game against the Phillies.
Ruiz will get a breather Tuesday after going 2-for-4 with a run scored during Monday's series opener. Harry Ford will fill in as Washington's backstop and bat fifth.
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Carlos Rodon SP | NYY
Yankees' Carlos Rodon: Beginning rehab assignment
Manager Aaron Boone said Rodon (elbow) is scheduled to begin a rehab assignment Saturday, likely with Triple-A Scranton/Wilkes-Barre, Gary Phillips of the New York Daily News reports.
The left-hander threw 40 pitches during a session of live batting practice Monday and should continue building up his workload Saturday. Rodon has been sidelined by elbow inflammation since late June and is likely to require at least a couple starts in the minors before being cleared to rejoin the Yankees rotation.
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Jameson Taillon SP | TOR
Blue Jays' Jameson Taillon: Will start Wednesday
Taillon will start Wednesday's game against the Astros in Houston, Shi Davidi of Sportsnet.ca reports.
The Blue Jays are moving to a six-man rotation for the time being, and Taillon looks poised to occupy a spot at least until Spencer Arrighetti (foot) is ready to return from the injured list. In 15 starts with the Cubs this season, Taillon pitched to an ugly 5.92 ERA, 1.36 WHIP and 68:27 K:BB across 76 innings. He also surrendered 25 home runs during that span.