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Ian Happ LF | CHC
Cubs' Ian Happ: Not ready to rejoin lineup
Happ (oblique) remains out of the lineup for Monday's game against the Marlins.
Happ will hit the bench for a third straight game while he contends with oblique discomfort, but at this stage, the Cubs are characterizing his injury as a day-to-day concern and don't believe he'll require a stint on the injured list. Per MLB.com, Happ was able to take some swings in the batting cage Sunday, so he could be available as a pinch hitter off the bench in Monday's series opener.
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Jose Castillo RP | NYM
Diamondbacks' Jose Castillo: Dropped from 40-man roster
The Diamondbacks designated Castillo for assignment Monday.
Castillo will lose his spot in the Arizona bullpen with the Diamondbacks activating right-hander Kendall Graveman (back) from the 15-day injured list in a corresponding move. After getting called up from Triple-A Reno on May 1, Castillo filled a low-leverage relief role and gave up eight earned runs on 10 hits and three walks in 6.1 innings across five appearances. The 29-year-old lefty is likely to clear waivers and will have the option of either accepting an outright assignment to Reno or electing free agency.
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Connor Norby 2B | COL
Marlins' Connor Norby: Grabbing seat Monday
Norby is absent from the lineup for Monday's game versus the Cubs.
Norby started all three games of the Marlins' series against the White Sox this past weekend and reached base a total of five times. However, he'll get a breather for the series opener versus the Cubs, yielding to Graham Pauley at third base.
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Garrett Hampson SS | CIN
Diamondbacks' Garrett Hampson: Booted off 40-man roster
The Diamondbacks designated Hampson for assignment Monday.
Hampson will lose his spot on the Arizona roster with the Diamondbacks calling up top prospect Jordan Lawlar from Triple-A Reno in a corresponding move. After attending spring training with the Diamondbacks as a non-roster invitee, Hampson was able to secure a utility role with the big club heading into Opening Day. He saw limited action over the first month and a half of the season, appearing in 18 games and slashing .167/.359/.167 with two steals across 41 plate appearances. Hampson's speed and defensive versatility could entice another team to put in a waiver claim for him and bring him aboard as a bench bat.
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Kendall Graveman RP | ARI
Diamondbacks' Kendall Graveman: Makes return from IL
The Diamondbacks reinstated Graveman (back) from the 15-day injured list Monday.
Arizona designated lefty Jose Castillo for assignment to open up a spot in the bullpen for Graveman, who missed the first month and a half of the season while recovering from a right lumbar strain. Graveman had previously missed the entire 2024 campaign while on the mend from right shoulder surgery, but he checked out healthy after tossing 3.1 scoreless innings across his three minor-league rehab appearances. Prior to his shoulder surgery, Graveman found success as a setup man and occasional stopgap option at closer, but he may have to settle for a middle-relief role initially with Arizona coming off a lengthy absence from big-league action. The back end of the Diamondbacks bullpen is highly unsettled, however, so Graveman could move up in the pecking order quickly if he excels in his first few relief appearances.
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Jordan Lawlar CF | ARI
Diamondbacks' Jordan Lawlar: Call-up official
Arizona recalled Lawlar from Triple-A Reno prior to Monday's game against the Giants.
Arizona designated infielder/outfielder Garrett Hampson for assignment to open up a spot on the 26-man active roster for Lawlar, who is back in the big leagues for the first time since 2023. The 22-year-old hit just .129 over a 14-game sample with Arizona that season, then spent all of 2024 in the minors while missing considerable time due to a torn ligament in his thumb as well as a Grade 1 hamstring strain. Despite the injury-plagued season, Lawlar maintained his status as the Diamondbacks' top prospect, and he opened the 2025 campaign healthy and slashed .336/.413/.579 with six home runs and 13 steals in 37 games with Reno to push his way back onto the big-league roster. The Diamondbacks don't have an obvious everyday spot in the lineup available for Lawlar, but he's expected to pick up a handful of starts per week while rotating between second base, third base and shortstop after seeing time at all three positions with Reno this season.
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Ronald Acuna Jr. RF | ATL
Braves' Ronald Acuna: Cleared for rehab assignment
Acuna (knee) is scheduled to begin a minor-league rehab assignment in the rookie-level Florida Complex League on Tuesday, Gabe Burns of The Atlanta Journal-Constitution reports.
Though Acuna will be playing in a game for the first time since tearing the ACL in his left knee May 26 of last year, he won't be eased in as a designated hitter, as Burns relays that the 27-year-old has been cleared to play the outfield. Atlanta will monitor Acuna closely over his first few games in Florida before determining whether he's ready to shift his assignment to a higher-level affiliate. A timeline hasn't been offered up for when Acuna might be ready to make his 2025 debut with Atlanta, but the club is seemingly leaving the door open for him to return before the end of May.
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Spencer Strider SP | ATL
Braves' Spencer Strider: Tossing sim game Wednesday
Strider (hamstring) is scheduled to throw 70-to-75 pitches in a simulated game Wednesday, Mark Bowman of MLB.com reports.
The upcoming sim game takes Strider out of the running from returning from the 15-day injured list this week, but if all goes well Wednesday, he could bypass a minor-league rehab start and rejoin the Atlanta rotation for the start of their series in Washington that begins May 20. After making a speedy recovery from the internal brace procedure he underwent on his right elbow last spring, Strider tossed five innings in his 2025 debut for Atlanta on April 16, then went back on the IL five days later after straining his right hamstring while playing catch.