The White Sox optioned Shuster to Triple-A Charlotte on Friday.

Shuster has managed just a 7.59 ERA over eight appearances out of Chicago's bullpen this season. He's fared much better at Charlotte, where he's allowed only two runs with a 15:3 K:BB over 11.1 innings.

Armstrong walked one in a scoreless and hitless inning to earn the save in Thursday's 1-0 win over the Astros.

This was a game played on narrow margins, and Armstrong got the job done after Jacob deGrom outdueled Hunter Brown over the first eight innings. This was Armstrong's second save in three days, and it appears he's the next man up while Luke Jackson (hand) and Chris Martin (elbow) are unavailable. Armstrong has done fairly well this year with a 2.89 ERA, 1.13 WHIP and 20:9 K:BB across 18.2 innings, earning two saves and two holds as well as one blown save in 17 appearances. He's just a temporary closer for now, and it's likely Armstrong will resume more of a middle-relief role once the Rangers' bullpen is healthier.

Boushley was optioned to Triple-A Round Rock on Thursday.

Boushley has split the season almost exactly evenly between the majors and Round Rock. He threw 2.1 shutout innings Wednesday and has allowed only one earned run across his last 8.1 frames in the majors. Cole Winn was called up in a corresponding move.

The Astros traded Castro to the White Sox on Thursday in exchange for cash, Robert Murray of FanSided.com reports.

Castro signed a minor-league deal with Houston during the offseason and has started the Triple-A season with a 2.29 ERA and 1.20 WHIP across 19.2 innings. The 30-year-old will now join a White Sox organization searching for answers in its bullpen, and his hot start in the minors figures to give him a decent chance at joining the South Siders relatively soon.

Wilson (0-2) took the loss Thursday against Cincinnati, allowing seven runs on 10 hits and one walk with three strikeouts over 5.1 innings.

Wilson made his fifth consecutive appearance at the back end of an injury-depleted White Sox rotation, and he allowed his most hits and runs in an outing this season, including three solo home runs. Since stepping into the rotation, Wilson has posted a 6.86 ERA across 21 innings. He's tentatively scheduled for a start next week against the Mariners.

Sands recorded his first save of the season in the second game of Wednesday's doubleheader against the Orioles, pitching a perfect ninth inning in an 8-6 win. He didn't walk or strike out a batter.

Jhoan Duran and Griffin Jax both worked the opening game of the twin bill, leaving Sands to handle the save chance in the nightcap. The 27-year-old righty has been effective in a high-leverage role this season, collecting two wins and five holds over 18 appearances in addition to Wednesday's save while delivering a 2.70 ERA, 1.14 WHIP and 12:6 K:BB through 16.2 innings.

Duran recorded his eighth save of the season in the first game of Wednesday's doubleheader against the Orioles, giving up a hit and striking out one in a scoreless ninth inning.

The Twins closer continues to dominate. Duran has yet to blow a save in 2025, and he's delivered 10 straight scoreless appearances, posting a 0.90 WHIP and 14:3 K:BB over 10 innings during that stretch. After some early-season usage which suggested manager Rocco Baldelli might be viewing him as more of a high-leverage fireman, Duran has maintained firm control of ninth-inning duties for Minnesota.

Garcia earned the save in Wednesday's 3-1 win over the Rays, striking out one batter without allowing a hit or walk in a scoreless ninth inning.

After Jeff Hoffman got roughed up for five runs in Tuesday's 11-9 loss, Garcia was brought in for the ninth inning Wednesday to protect the Blue Jays' two-run lead. Garcia started out strongly by striking out Jose Caballero and needed just seven pitches (six strikes) to capture his third save of the season. Garcia's 3.71 ERA through 17 innings is inflated by the seven runs he gave up across two outings May 3 and 6; he's otherwise yielded no earned runs in his other 16 appearances.

Hader picked up the save in Wednesday's 4-3 win over the Royals after allowing one walk in a scoreless ninth inning. He struck out one.

Hader has now posted 14 scoreless outings out of 16 appearances in 2025. The All-Star left-hander has converted each of his 10 save opportunities, producing a 1.50 ERA, 0.89 WHIP and 26:5 K:BB over 18 innings. Hader is locked in as Houston's closer.

Chapman (2-2) took the loss against the Tigers on Wednesday, allowing one run on one hit and one walk while striking out one batter in two-thirds of an inning.

Chapman was brought in for the ninth inning tasked with keeping the game tied at 5-5. He was able to retire the next two batters after issuing a walk to Andy Ibanez, but Chapman was unable to send the game into extra innings after Justyn-Henry Malloy walked off the Red Sox with a pinch-hit RBI single. Chapman remains a perfect 6-for-6 in save chances but has been scored upon in three of his past eight outings. The veteran left-hander is up to a 2.25 ERA and 1.00 WHIP over 16 innings and should continue to split closing work with Justin Slaten.