Tolle allowed one unearned run on three hits while striking out four over three relief innings in Thursday's 5-3 loss to the Athletics.

Tolle, who last pitched eight days ago, made his first appearance as a reliever after the team announced Wednesday that the left-hander would be shifting to the bullpen. Boston manager Alex Cora gave starter Brayan Bello the hook after 70 pitches and four innings, as the Red Sox have slipped and are just 1.5 games ahead of the surging Guardians for the final wild-card spot. Tolle didn't get any help from Trevor Story, who committed two errors in the game.

Kolek (5-6) took the loss Thursday against the Mariners, allowing two runs (one earned) on two hits and one walk while striking out eight over 7.1 innings.

Kolek was nearly flawless outside of the fourth inning, when he gave up the only two hits he allowed all game -- the second being an RBI double to Jorge Polanco that accounted for the lone earned run against him. Despite the tough-luck loss, the right-hander has been outstanding since being acquired by Kansas City, posting a 1.67 ERA and an 18:3 K:BB across 27 innings while going at least six frames and yielding no more than two runs in each of his four starts. Even so, the 28-year-old has managed to secure just one win in that stretch. Kolek is slated for a tougher assignment in his next outing against the Dodgers, who rank near the top of MLB in most offensive categories in September.

Castillo (10-8) earned the win Thursday against the Royals, allowing three hits and striking out three across six scoreless innings.

Castillo allowed only three baserunners through his six innings of work, leaning heavily on his breaking pitches -- mixing in 20 sliders and 16 changeups -- to induce weak contact. The right-hander was at 40 pitches through two innings but settled in nicely, needing just 84 pitches overall to log his third straight quality start. Castillo has been overall sharp in September with a 2.86 ERA across four outings and will look to keep it going in his final start of the regular season next week against the Rockies. While Colorado has reached base at the lowest rate in MLB this month, the hitter-friendly environment at Coors Field is always a factor.

Kikuchi allowed two runs on five hits and three walks while striking out two over 5.2 innings in a no-decision versus the Brewers on Thursday.

Kikuchi has walked at least three batters in four of his last seven starts. He's at least gotten the rest of his work under control, allowing just three runs over his last 11.2 innings, but his winless stretch reached seven games Thursday. For the season, Kikuchi has a 4.05 ERA, 1.45 WHIP and 168:73 K:BB through 173.1 innings. The southpaw is tentatively projected for his last start of the season at home against the Royals next week.

Povich (3-8) was charged with the loss Thursday against the Yankees, allowing three runs on five hits and four walks in five innings. He struck out five.

While Povich did manage to hurl at least five innings for a fourth consecutive start, the four walks were his most since his April 18 outing against the Reds. The southpaw did strike out the side in the fourth frame as well, but he remains without a quality start since Aug. 10 against the Athletics. Povich has an underwhelming 5.06 ERA, 1.46 WHIP and 114:41 K:BB over 106.2 innings this year, and he's next set to take the ball versus a Rays team with a strong .799 OPS against left-handed pitching since the beginning of September.

Fried (18-5) picked up the win Thursday against the Orioles, allowing three hits and one walk in seven shutout innings. He struck out 13.

Fried had Baltimore out of sorts, tying a career high with 13 punchouts while inducing an incredible 28 whiffs. It was the second time this season that the All-Star southpaw racked up double-digit strikeouts, and he pitched at least seven innings for the fourth time in his last five outings. Through 188.1 innings this year, Fried boasts a 2.92 ERA, 1.11 WHIP and 182:49 K:BB. His next appearance could be his final regular-season start, which is tentatively set to come against a White Sox club with a paltry .611 OPS versus left-handed pitching since the beginning of September.

Ginn (4-6) picked up the win Thursday against the Red Sox, allowing two runs on five hits and one walk in six innings. He struck out three.

Thursday marked Ginn's first quality start since July 27 in Houston, and he's now yielded just three runs over his first 15.1 innings of the month. The right-hander also took on a season-high workload, tossing 98 pitches, and he generated an impressive 14 whiffs. Next week's scheduled outing against the division-rival Astros could be the final appearance of the year for Ginn, who'll be looking to build on Thursday's performance and improve his middling 4.57 ERA, 1.32 WHIP and 95:28 K:BB over 86.2 innings.

Bello (11-8) was charged with the loss Thursday against the Athletics, allowing four runs (three earned) on five hits and two walks in four innings. He struck out three.

It was the first time Bello was unable fire at least five innings since way back on May 28, and the 70 pitches represented his second-lowest total of the season. The month of September hasn't been kind so far for the right-hander, who has a 5.85 ERA, 1.45 WHIP and 13:9 K:BB across his last 20 innings. Bello will be aiming to right the ship in what may be his final appearance of the regular season next week in Toronto, where he'll bring a career-best 3.34 ERA and 1.24 WHIP to go with a 121:56 K:BB over 161.2 frames.

Bassitt (11-9) took the loss Thursday against Tampa Bay, allowing three runs on eight hits and two walks over 4.1 innings. He struck out three.

All three runs charged to Bassitt came in the second inning, when the Rays strung together five straight two-out singles. The 36-year-old Bassitt has gone 10 starts without a win (his last victory came on July 23), though he had pitched to a 2.30 ERA in five outings prior to Thursday. Overall, the right-hander sports a 3.96 ERA with a 1.33 WHIP and 166:52 K:BB through 170.1 innings this season. Bassitt's currently in line to face the Red Sox at home his next time out.

Baz (10-12) earned the win Thursday over the Blue Jays, allowing two hits and a walk over five scoreless innings. He struck out four.

After giving up five runs in just 2.1 innings against the Cubs his last time out, Baz bounced back with an impressive showing against the Blue Jays with his second scoreless outing in his last four starts. It's been an up-and-down year overall for the 26-year-old Baz, who sports a 4.99 ERA with a 1.35 WHIP and 173:61 K:BB through 30 starts (162.1 innings). He's currently lined up to face the Orioles on the road his next time out.