Arizona Diamondbacks shortstop Geraldo Perdomo (knee) had surgery on Monday to fix a torn meniscus in his right knee after being placed on the 10-day injured list on Sunday. Manager Torey Lovullo said the surgery went well. Perdomo is "bummed" and hopes to be back next month. The D-backs brought up infielder Kevin Newman from Triple-A Reno, but Blaze Alexander is expected to see most of the playing time at the 6 in Perdomo's absence, with Jace Peterson also an option at the position. In six games at Reno, Newman hit .364/.407/.636 with a home run and seven RBI. The 24-year-old Perdomo injured his knee on April 3 while rounding the bases in extra innings and is expected to miss at least a month of action.

The Minnesota Twins placed outfielder Max Kepler (knee) on the 10-day injured list on Tuesday with a right-knee contusion. The club also acquired right-hander Michael Tonkin from the New York Mets for cash considerations and moved right-hander Zack Weiss (shoulder) to the 60-day injured list with a right-shoulder strain. The 31-year-old Kepler has struggled with injuries in his career and will now miss at least the next 10 days with what doesn't appear to be a major injury. He last played on Saturday and will be eligible to return to the Twins on April 17. In addition to the injury, Kepler has gone just 1-for-20 with six strikeouts in his first five games in 2024. Until he's able to return, Manuel Margot and Matt Wallner will likely platoon in right field.

Washington Nationals right-hander Joan Adon was called up from Triple-A Rochester on Tuesday and will make the start against the San Francisco Giants on the road. Adon was brought up to replace right-hander Josiah Gray (elbow), who landed on the 15-day injured list. Depending on how long Gray ends up being out and how Adon performs in Washington's starting rotation, the 25-year-old could stick around in D.C., making him worth a look as a waiver-wire pickup in NL-only leagues. He has above-average velocity and gets frequent ground balls, although he had a rough 6.45 ERA with 24 walks and 48 strikeouts in 51 2/3 innings over 12 appearances (10 starts) for the Nats in 2023. Unless he shows more consistency than he has in the last three seasons in the big leagues, fantasy managers in mixed leagues can probably ignore him.

Washington Nationals right-hander Josiah Gray (elbow) was placed on the 15-day injured list (retroactive to April 6) on Tuesday with a right-elbow/forearm flexor strain and recalled pitcher Joan Adon from Triple-A Rochester in a corresponding move. Fantasy baseball managers in shallower mixed leagues that have Gray rostered will probably waste no time dumping him to the waiver wire after he's started the 2024 campaign by surrendering 13 earned runs on 15 hits (two home runs) while walking five and striking out nine in 8 1/3 innings over his first two starts of the year. The 26-year-old could also be in danger of missing serious time given the nature of his arm injury. Adon will make the start on Tuesday in San Francisco against the Giants.

Boston Red Sox general manager Craig Breslow said that right-hander Nick Pivetta (elbow) has a "mild strain" of the flexor tendon in his right arm and could return from the 15-day injured list when he's eligible. The Red Sox wanted to take advantage of the early season schedule to give Pivetta some time off. The 31-year-old is going to miss the next two weeks, but fantasy managers that have him rostered need to keep him in an IL spot until he returns. Pivetta has been excellent in the early going, allowing only an earned run on a solo home run while walking one and fanning 13 in 11 innings over his first two starts in 2024. It's unknown who will take his rotation spot in the short term, with Cooper Criswell, Chase Anderson and Josh Winckowski all being candidates for a few spots starts.