The Padres reinstated King (knee) from the injured list ahead of his start Tuesday against the Diamondbacks.

King has been limited to just one start in the majors since May 18 due to problems with his right shoulder and, more recently, left knee. Now that both injuries are no longer an issue, he'll rejoin the Padres' rotation and get to face a D-backs offense that has managed just a .670 OPS over its last 15 games. Alek Jacob was optioned to Triple-A El Paso in a corresponding move.

The Royals placed Wacha on the 7-day injured list Tuesday after he was diagnosed with a concussion, Anne Rogers of MLB.com reports.

Wacha was involved in a minor off-the-field accident and is headed back to Kansas City to be evaluated further. He had been scheduled to start Wednesday in Cleveland, but that will no longer happen. Wacha will be eligible to return as soon as Sept. 16 versus the Mariners, but it's unclear at this point whether he will be ready by that date. The Royals have not announced a replacement for Wacha in the rotation.

The Brewers recalled Patrick from Triple-A Nashville to start Tuesday's game against the Rangers.

The right-hander is joining Milwaukee for a spot start, which will be his first big-league appearance since Aug. 24. Patrick has started in 20 of his 21 MLB outings this season and has delivered a quality rookie campaign with a 3.60 ERA, 1.30 WHIP and 106:34 K:BB across 105 innings.

Holmes (elbow) began his throwing program Monday, Grant McAuley of the Marietta Daily Journal reports.

Holmes has already been ruled out for the remainder of this season after he was diagnosed with a partially torn UCL in his right elbow in early August. The goal is for the righty to continue to ramp up his throwing over the next two months and head into the offseason and spring training without restrictions. However, given the nature of Holmes' injury, the possibility of setbacks are there.

Arrighetti will receive a second opinion on his injured right elbow this week, Chandler Rome of The Athletic reports.

Arrighetti told reporters last week that his UCL was intact and he would not require surgery. That's presumably still the case, but more should be known about his course of treatment after he receives a second opinion. Arrighetti has been out for all of September and is not expected back before the end of the regular season.

Walter will undergo surgery on his left elbow this week, Chandler Rome of The Athletic reports.

The specifics on the nature of the procedure aren't clear, but more should be known after the surgery takes place. Walter was terrific this season when healthy for the Astros, collecting a 3.35 ERA and 52:4 K:BB over 53.2 innings covering nine starts. If it's UCL surgery that the 29-year-old needs, he would likely be out until the 2027 season.

The Astros recalled France from Triple-A Sugar Land on Tuesday.

France allowed one run over five innings in his last start at Sugar Land. He had pitched in relief in his three appearances prior to that, and the Astros plan to deploy him as a multi-inning reliever.

Orioles interim manager Tony Mansolino said that Kremer (forearm) played catch Sunday and will do so again Tuesday, Jake Rill of MLB.com reports.

Kremer was removed from his start in Friday's 2-1 win over the Dodgers after three innings due to right forearm soreness. An MRI came back clean, and while he will miss his next turn in the rotation, the hope remains that Kremer could avoid a stint on the 15-day injured list.

Henderson (elbow) is scheduled to throw a bullpen session Sept. 16, Adam McCalvy of MLB.com reports.

Henderson is on the 60-day injured list while recovering from a right flexor strain, an injury that occurred in early August. However, he's made progress in his recovery and the Brewers are hopeful that the rookie right-hander will be available at some point during the postseason.

Kolek is slated to start Thursday's game against the Guardians at Progressive Field.

With Seth Lugo (back) recently joining Cole Ragans (shoulder) on the injured list, Kolek will stick around with the Royals to make a second turn through the rotation following his call-up from Triple-A Omaha last Thursday. During his start in this past Saturday's 11-2 win over the Twins, Kolek went seven strong innings and struck four batters while permitting two earned runs on six hits and one walk. He now maintains a respectable 3.88 ERA over 92.2 innings between San Diego and Kansas City, though it's supported by a weak 9.3 K-BB%.