Athletics manager Mark Kotsay said Barnett will start Saturday's game against the Rangers in Sacramento, Jessica Kleinschmidt of Baseball America reports.

Barnett has spent most of the 2025 season with Triple-A Las Vegas, where he accrued a 5.83 ERA, 1.56 WHIP and 123:60 K:BB across 117.1 innings. After being called up from Triple-A on Tuesday, Barnett went unused out of the bullpen over the last few days and will now step into the rotation spot vacated by lefty Jacob Lopez (elbow), who was placed on the IL earlier this week. Though Barnett is regarded as one of the Athletics' top pitching prospects, his poor numbers in the Pacific Coast League make it difficult to depend on him as a streaming option in his MLB debut, especially while pitching in a hitter-friendly venue in Sacramento.

The Rockies reinstated Marquez (biceps) from the 15-day injured list to start Friday's game against the Cubs.

Marquez will return from nearly a five-week absence due to right biceps tendinitis. The veteran right-hander worked up to 76 pitches in his last minor-league rehab start, and he should be cleared to handle a full workload. Marquez has a better ERA at Coors Field (5.31) than he does on the road (5.95) this season.

Cameron isn't listed as a starting pitcher in any game of Kansas City's three-game set against the Tigers that begins Friday, Jackson Stone of MLB.com reports.

Cameron's normal trip through the rotation would have lined him up for a start Saturday, but Stephen Kolek will take the mound instead. Michael Wacha will close out the series Sunday. It's unclear when Cameron's next start will come, but it looks as though the Royals will limit his workload during the closing weeks of the regular season. Cameron has thrown 140.2 innings this season across Triple-A and the Majors, and his previous career high was 122.2 innings, which he set in 2024.

Lopez (shoulder) will make what's expected to be his final rehab start Sunday at Triple-A St. Paul, Bobby Nightengale of The Minnesota Star Tribune reports.

Lopez struck out five and allowed three earned runs over four innings in his second rehab outing Tuesday with St. Paul. He threw 68 pitches in that start and will get stretched out a bit more before returning from the 60-day injured list and likely slotting into the Twins rotation during next weekend's series in Kansas City. Lopez has been shelved since early June due to a Grade 2 teres major strain.

The Mets will have Megill (elbow) make at least one more rehab start before considering activating him from the 60-day injured list, Anthony DiComo of MLB.com reports.

Heading into the week, Megill looked to be a candidate to start Friday's game against Miami, but the Mets opted to give him another rehab start to stretch out. The 30-year-old right-hander ended up taking the hill Thursday for Triple-A Syracuse in what was the fourth overall outing of his rehab assignment. He covered four innings and tossed 70 pitches for Syracuse, striking out four while allowing three earned runs on four hits and four walks. Megill will likely take the hill again in the minors early next week in what could be his final rehab start, but his role upon his return from the 60-day injured list has yet to be determined. Though Megill is building up as a starter, he could be relegated to the bullpen if top prospect Jonah Tong -- who will be called up from Syracuse to start Friday versus the Marlins -- fares well in his big-league debut and earns himself additional turns through the rotation.

Wacha (paternity) is still scheduled to start Sunday's game against the Tigers, Jaylon T. Thompson of The Kansas City Star reports.

Despite being placed on the paternity list Friday, Wacha will make his regularly scheduled start Sunday. The 34-year-old has been excellent lately, logging a 4-1 record and a 2.45 ERA across his last eight starts, spanning 47.2 innings. He's struck out just 29 batters during that stretch, though.

Kolek is slated to start Saturday's game against the Tigers in Kansas City, Jaylon T. Thompson of The Kansas City Star reports.

Kolek was recalled from Triple-A Omaha on Friday after Michael Wacha (personal) was placed on the paternity list in a corresponding move. Though Wacha is on track to start Sunday's series finale, the Royals will temporarily clear a spot in the rotation for Kolek in order to give rookie Noah Cameron some additional rest between starts. Saturday's outing will mark the Royals debut for Kolek, whom Kansas City acquired from the Padres at the trade deadline. After the trade, Kolek reported to Omaha and logged a 6.63 ERA in 19 innings over five starts before receiving a call-up.

Gray (elbow) threw a about 30 pitches of live batting practice Wednesday, Bobby Blanco of MASNSports.com reports.

The right-hander continues working his way back from the Tommy John surgery with an internal brace that he underwent in July 2024. Gray may need another live session or two before being cleared for a rehab assignment. Assuming he can avoid a setback, the 27-year-old has a good chance of coming off the injured list for a cameo with the Nationals before the end of the season.

The Royals placed Wacha on the paternity list Friday.

Wacha can miss a maximum of three days, according to MLB rules, which could put his scheduled Sunday start in jeopardy. The Royals recalled Stephen Kolek, who's served exclusively as a starter since being acquired by the Royals near the trade deadline, from Triple-A Omaha in a corresponding move. Kansas City hasn't named a starter for Saturday's contest, which is Noah Cameron's normally scheduled turn through the rotation.

The Royals recalled Kolek from Triple-A Omaha on Friday.

Kolek was traded from San Diego to Kansas City near the trade deadline and immediately reported to Omaha. He made five starts with Omaha, posting a 6.63 ERA and a 20:10 K:BB across 19 innings. Kolek steps onto the active roster in place of Michael Wacha, who was placed on the paternity list. Per Anne Rogers of MLB.com the Royals haven't announced a starter for Saturday's game and have Wacha listed as Sunday's starter. Assuming Wacha will be back in time for his scheduled outing, Kolek could pitch in Saturday's game, potentially after Noah Cameron, although Kolek could also get that start if the Royals want to manage Cameron's workload.