The Red Sox list May as their probable starting pitcher for Sunday's game against the Astros at Fenway Park.

Acquired from the Dodgers on Thursday, May won't have to wait long to make his Boston debut. Prior to being traded, May was in line to move to the Los Angeles bullpen, but he should have a clearer path to a permanent rotation spot in Boston, as he'll likely take over as the club's new No. 5 starter after Cooper Criswell makes what's expected to be a spot start Friday. Over 19 appearances (18 starts) with the Dodgers this season, May posted a 4.85 ERA, 1.35 WHIP and 97:43 K:BB in 104 innings.

Horton (5-3) picked up the win in Friday's 1-0 victory over the Orioles, allowing two hits and three walks over five scoreless innings. He struck out three.

A Baltimore lineup that got depleted at the trade deadline was no match for Horton and the Cubs bullpen, with the rookie right-hander generating 24 called or swinging strikes in only 71 pitches (44 total strikes). Horton extended his scoreless streak to 17.2 innings with the performance, and on the season he sports a 3.42 ERA, 1.29 WHIP and 53:25 K:BB through 73.2 innings. He'll look to produce more goose eggs in his next start, which is scheduled to come at home next week against the Reds.

Rogers (4-2) took the loss Friday as the Orioles fell 1-0 to the Cubs, allowing one run on four hits over eight innings. He struck out eight without walking a batter.

The southpaw was brilliant once again, firing 68 of 88 pitches for strikes with 33 called or swinging strikes, but a second-inning sacrifice fly by Ian Happ proved to be all the offense Wrigley Field would see on the afternoon. Rogers has been a revelation for Baltimore since joining the rotation in mid-June, and over his last seven trips to the mound he's delivered six quality starts with a 1.13 ERA, 0.67 WHIP and 39:10 K:BB in 47.2 innings. He'll look to keep rolling in his next outing, which lines up to come on the road next week in Philadelphia.

The Athletics selected Morales' contract from Triple-A Las Vegas on Friday.

Morales has pitched at both Double- and Triple-A this season, registering a 3.73 ERA, 10.8 K/9 and 3.5 BB/9 across 89.1 innings. He's started 14 games but recently was moved to the bullpen at Las Vegas. Expect Morales to initially work out of the Athletics' bullpen.

Ortiz's locker has been cleared out in the Guardians' clubhouse Friday as he remains under investigation by MLB, Zack Meisel of The Athletic reports.

Teammate Emmanuel Clase also had his locker cleared out, as both pitchers are currently on paid non-disciplinary leave as part of the MLB's sports-betting investigation. Ortiz was placed on leave July 18, and Clase joined him this week just ahead of Thursday's trade deadline. It appears the Guardians don't expect to have Ortiz available again this season.

The Rockies recalled Palmquist from Triple-A Albuquerque on Friday.

With Colorado trading Jake Bird and Tyler Kinley prior to Thursday's deadline, Palmquist will come back up to reinforce the pitching staff. The left-handed Palmquist has worked exclusively as a starter at the big-league level so far in his career, but he has struggled to a 7.63 ERA and 1.73 WHIP, and it's possible he works as more of a swingman this time around.

The Marlins optioned Gusto to Triple-A Jacksonville on Friday.

Miami acquired Gusto from Houston on Thursday, but he won't immediately join the big-league club. The right-hander made 24 appearances (14 starts) with the Astros this year and had a 4.92 ERA, 1.43 WHIP and 87:28 K:BB across 86 innings. It's likely only a matter of time before he receives his first look with the Marlins.

Singer (9-8) picked up the win in Friday's 3-2 victory over Atlanta, allowing four hits and a walk over six scoreless innings. He struck out 10.

The right-hander set a new season high in strikeouts as he generated 21 swinging strikes over 97 pitches (66 total strikes). The quality start was Singer's ninth of the year, and while he's given up three runs or fewer in five of six outings since the beginning of July, one rough start against the Nats has left him with a 4.50 ERA, 1.23 WHIP and 35:8 K:BB in 30 innings over that stretch. Singer will look to stay sharp in his next trip to the mound, which is scheduled to come on the road next week in Pittsburgh.

Elder (4-8) took the loss Friday, giving up two runs on four hits and two walks over 6.2 innings as Atlanta was downed 3-2 by the Reds. He struck out five.

The right-hander pitched well and kept Cincinnati off the board until the sixth inning, though a lack of run support forced Elder to settle for his seventh quality start of the year but not a win. It was a solid rebound effort after he'd been shellacked for eight runs in 2.2 innings in his prior outing, but Elder still carries a 7.38 ERA, 1.84 WHIP and 45:24 K:BB through 50 innings since he rejoined the big-league staff at the beginning of June. Injuries will keep Elder in the rotation, but his volatility makes him a risky fantasy option heading into his next start, which lines up to come at home next week against the Marlins.

The Nationals recalled Ogasawara from Triple-A Rochester on Friday.

The left-hander will bolster Washington's pitching staff in the wake of the trade deadline. The Nationals haven't announced their updated rotation plans, but Ogasawara is likely to be in the mix to take the starting spot previously held by Michael Soroka, who was dealt to the Cubs, though he'll first be available out of the bullpen since Washington won't need a fifth starter for a bit, per Andrew Golden of The Washington Post.