The Orioles optioned Krook to Triple-A Norfolk on Monday.

He'll head back to Triple-A to reopen a spot on the 26-man active roster for right-hander Corbin Burnes (personal), who was reinstated from the paternity list. During his three-day stay with the Orioles, Krook made his lone relief appearance in Sunday's 11-2 loss to the Rangers, giving up three runs (two earned) on one hit and one walk while striking out two over one inning.

Speier (shoulder) will throw a bullpen session Tuesday, MLB.com reports.

The left-hander was able to throw off a mound Saturday without issue, and he'll continue advancing in his recovery with Tuesday's session. Speier may need to throw only a couple of bullpen sessions before he's deemed ready for a rehab assignment, although further clarity should be gleaned following Tuesday's activity.

Garcia (elbow) threw a bullpen session Sunday, Shi Davidi of Sportsnet.ca reports.

The reliever will throw another bullpen session Wednesday before the next steps in his rehab program are determined. Garcia has missed just two weeks with a nerve issue in his right elbow, so it's possible he'll skip a rehab assignment and return from the 15-day injured list whenever the Blue Jays feel that he's ready. With Jordan Romano (elbow) out indefinitely, Garcia should be back in the mix for saves once he returns, perhaps even as the club's top option. Chad Green has been serving as Toronto's closer since Garcia landed on the IL but hasn't received any save chances during that stretch.

McFarland (1-1) took the loss against the Diamondbacks on Sunday, allowing three earned runs on a hit, a hit batsman and a walk over one-third of an inning.

McFarland's outing was about as messy as his final line implies, with the left-hander immediately working himself into trouble upon entering in the seventh inning with the game knotted at 1-1. McFarland hit Randal Grichuk to open the frame and subsequently yielded a double to Corbin Carroll and intentionally walked Ketel Marte before exiting. Austin Adams would allow all three inherited runners to score, saddling McFarland with the first runs on his ledger since June 6. Despite the stumble, McFarland was impressive throughout most of June, putting together nine consecutive scoreless appearances (6.1 innings) with three holds prior to Sunday.

Holton struck out the only batter he faced and earned a save over the Angels on Sunday.

Holton entered a 7-6 game after Shelby Miller was hammered for five runs in the ninth inning. Holton halted the comeback attempt and earned his first save since May 25. Jason Foley likely wasn't available after recording four outs Saturday, and the team likely didn't want to rush him out of the bullpen after Miller's ninth-inning collapse. Holton has a 4.04 ERA with a 34:9 K:BB through 42.1 frames.

Stanek (5-2) took the loss Sunday against the Twins, allowing two runs on two hits over an inning's work.

Stanek entered in the eighth with the game tied at 3-3 after the Mariners were able to knot things up in the bottom of the seventh. He picked up a quick first out but then allowed a base knock followed by a two-run homer to Trevor Larnach, which ultimately decided the game. Sunday ended an 8.2 innings scoreless streak for Stanek, which spanned 10 games. He compiled three saves, two holds and two wins while owning an 11:1 K:BB during that period. The 32-year-old has been dependable for much of the year, owning a 3.78 ERA, 1.23 WHIP and 36:11 K:BB in 33.1 innings.

Duran picked up the save in Sunday's 5-3 win over the Mariners, pitching a perfect ninth while striking out a batter in the process.

Duran capped off the month with his 12th save in 13 tries this season and turned in a scoreless outing for the 10th time in 12 June appearances. The hard-throwing righty owns a solid 3.51 ERA, 1.01 WHIP and 23:8 K:BB in 25.2 innings.

Dubin threw 3.1 scoreless innings, walking three and striking out two in Sunday's win over the Mets.

Dubin started a bullpen game for the Astros and turned in his longest outing of the season. Though he didn't generate many strikeouts, he was able to keep the Mets off balance with 12 called strikes on only 55 total pitches. Dubin entered the appearance having given up four earned runs across his last 4.1 innings (three appearances), and he recorded his first scoreless effort since June 12.

Miller allowed five runs on three hits and a walk while retiring just two batters in relief during Sunday's 7-6 win over the Angels.

Miller came on in the bottom of the ninth inning with the Tigers up 7-1 but he nearly blew the comfortable lead. The righty hit a batter and gave up a walk before allowing a three-run bomb to Zach Neto. A few batters later, Miller served up a two-run shot to Jo Adell before getting the hook with two outs. Over his last two outings, the veteran reliever has allowed eight earned runs in just 1.2 innings, which has pushed his ERA up to an unsightly 6.23. Miller started the season strong, but he's run into a rough patch and is hard to trust at this point.

Kopech struck out two in a perfect ninth inning Sunday against the Rockies. The game was tied at the time, and the White Sox would go on to lose in 14 innings.

Kopech made his third appearance in four days after recording back-to-back saves June 27 and June 28. The right-hander delivered Sunday, retiring the side in order while striking out two batters on just eight pitches. The 28-year-old now owns a 2.25 ERA with two saves over his past eight innings, solidifying himself as the White Sox's closer.