Butto will miss the next 2-4 months after undergoing surgery Saturday to remove a blood clot from his right arm, Justice delos Santos of The San Jose Mercury News reports.

Butto was diagnosed with a blood clot after leaving his appearance Wednesday against San Diego with arm fatigue. The recovery timeline leaves room for him to return to the Giants' bullpen before the end of the season, though that likely won't happen until closer to or after the All-Star break.

Walker went 3-for-4 with a home run, five RBI and a stolen base in Saturday's 11-6 loss to the Tigers.

The 23-year-old outfielder supplied most of the Cardinals' offense on the afternoon with a grand slam off Drew Anderson in the fifth inning. The homer was Walker's second of the season while the steal was his first, and through eight games he's batting .296 (8-for-27) with seven runs, eight RBI and a 3:7 BB:K. It's still early, but Walker is showing signs of finally breaking out and turning his prodigious upside into actual production.

Henderson will join the Brewers as the 27th man and start the second game of Saturday's doubleheader against the Royals, Todd Rosiak of the Milwaukee Journal Sentinel reports.

After striking out five batters over three innings during his first outing at Triple-A Nashville, Henderson is now set to make his season debut in the big leagues. He showed plenty of promise last year while posting a 1.78 ERA and 0.99 WHIP alongside a 33:8 K:BB over 25.1 regular-season frames across his first five MLB starts, but he was never able to lock down a full-time spot in Milwaukee's rotation. Brandon Sproat is expected to take over on the mound once Henderson is removed, and the latter will most likely be returned to Nashville after the game.

May (0-2) took the loss Saturday, surrendering seven runs on seven hits and two walks over 3.1 innings as the Cardinals were downed 11-6 by the Tigers. He struck out four.

A two-run homer by Kerry Carpenter in the first inning set the tone, as Detroit ended up slugging four long balls on the afternoon, with two of them coming against May. The right-hander tossed 79 pitches (48 strikes) in another rough outing to begin his tenure with the Cards, and through 7.1 innings he's stumbled to a 15.95 ERA, 2.73 WHIP and 7:3 K:BB. May will try to right the ship in his next start, which lines up to come at home next weekend against the team he ended the 2025 campaign with, the Red Sox.

Imanaga won't start as scheduled Saturday against the Guardians, as the game was postponed due to rain, Tim Stebbins of MLB.com reports.

The two teams will play a doubleheader Sunday to make up Saturday's game, and Imanaga will take the mound during the nightcap, per Taylor McGregor of Marquee Sports Network. The 32-year-old southpaw will be looking to bounce back from a poor showing in his season debut, during which he allowed four earned runs on six hits and two walks over five innings.

Schmitt (back) isn't in the lineup for Saturday's game against the Mets, Susan Slusser of the San Francisco Chronicle reports.

Schmitt was a late scratch from Friday's lineup due to a sore back, and the issue will keep him out for an additional game Saturday. Jerar Encarnacion will pick up another start at first base as a result and bat ninth.

Betts was removed from Saturday's game against the Nationals in the first inning with lower-back pain.

The 33-year-old infielder drew a walk during his lone plate appearance and scored shortly afterward on a Freddie Freeman double, but Betts was replaced on defense when the Dodgers took the field for the bottom of the inning. The severity of his injury is still unclear, but the team may send him for imaging to determine whether he's dealing with a structural issue. Miguel Rojas entered as Betts' replacement Saturday and will likely be the next man up to start for Los Angeles if the 2018 AL MVP has to miss additional time.

Santana isn't in the lineup for Saturday's game against Atlanta.

Santana will get a chance to reset Saturday after going 0-for-17 over his last five games. Jose Fernandez will start at first base while Santana sits, and Adrian Del Castillo will serve as Arizona's designated hitter.

Hayes isn't in the lineup for Saturday's game against the Rangers.

Hayes will take a seat Saturday and recollect himself after going just 2-for-19 (.105) at the dish through his first seven games. His absence will move Eugenio Suarez to third base, opening up the DH spot for Nathaniel Lowe.

Stephenson isn't in the lineup for Saturday's game against the Rangers.

After hitting the game-winning home run in the ninth inning of Friday's contest, Stephenson will take a seat on the bench to begin Saturday's game. Jose Trevino will get the nod at catcher and bat ninth.