The Nationals placed Thompson on the 15-day injured list Tuesday with right biceps tendinitis.

The injury will end Thompson's season, though he should have a normal offseason, barring any setbacks. Thompson struggled mightily in 10.2 innings out of the Nationals' bullpen in 2025, finishing with an 11.81 ERA and 11:21 K:BB.

The Pirates optioned Sisk to Triple-A Indianapolis on Tuesday.

He's being replaced on the roster by Hunter Barco. Sisk has made 19 relief appearances in the majors this season between the Royals and Pirates, posting a 3.57 ERA and 25:10 K:BB over 17.2 frames.

Atlanta optioned Wiles to Triple-A Gwinnett on Tuesday.

He's clearing out to make room on the roster for waiver claim Joel Payamps, who officially reported to the team Tuesday. Wiles' stint in the majors lasted one week and he did not make an appearance.

Zimmermann will start Tuesday's game against the Padres, Adam McCalvy of MLB.com reports.

Zimmermann was promoted to the major leagues Saturday with the expectation that it would be a brief stint, but he'll remain with the Brewers a bit longer after Brandon Woodruff (lat) ended up on the 15-day injured list. Zimmermann has fared well in the minors over his last four outings, cruising to a 1.17 ERA and 0.87 WHIP with 22 strikeouts over 23.0 innings, but he'll face a tough San Diego lineup in his first big-league action of 2025.

Suarez picked up the save Monday against Washington. He allowed five hits and no walks while striking out two over three scoreless innings.

Suarez came in to handle the final three innings Monday, locking down his first save of the year. The southpaw hasn't logged a ton of big-league action, but he's been effective when used, working to a 1.96 ERA and 1.25 WHIP over 18.1 innings across six appearances (one start).

Rios (undisclosed) was activated from the 60-day injured list Thursday.

Rios missed the majority of the 2025 campaign due to an unspecified injury but has since returned to Triple-A Syracuse. He had a rough outing Sept. 18 against Lehigh Valley, getting knocked around for four runs on three hits and one walk while striking out one, but he responded nicely with a scoreless inning Sunday.

Atlanta designated Ragsdale for assignment Monday.

The transaction frees up a spot on the 40-man roster for the addition of Charlie Morton, who was signed Monday. Ragsdale was just claimed off waivers by Atlanta last week and will now go through the waivers process again.

Atlanta designated Seabold for assignment Monday.

The transaction frees up a spot on the 40-man roster for the addition of waiver claim Joel Payamps. Seabold has yielded five runs with a 10:6 K:BB over 10.1 frames at the big-league level in 2025 and is a good bet to clear waivers.

Atlanta claimed Payamps off waivers from the Brewers on Monday.

Payamps was a staple in the Milwaukee bullpen from 2023 to 2024, holding a 2.78 ERA and 136:35 K:BB over 129.2 innings. However, he's experienced sharp regression in 2025, posting a 7.23 ERA with the Brewers and spending much of the campaign in the minors. Atlanta will give him a look in the final week of the season and could keep him for 2026, as well, if it wants to tender the reliever a contract in his final year of arbitration eligibility.

Treinen (1-7) was charged with a loss and a blown save against San Francisco on Sunday, allowing three runs on three hits and two walks with no strikeouts over two-thirds of an inning.

After Emmet Sheehan gave the Dodgers seven scoreless, one-hit innings, Treinen entered in the eighth to try to preserve a 1-0 lead. The veteran reliever got into trouble immediately, allowing a pair of singles and then a ground-rule, run-scoring double as San Francisco tied the score. Treinen next retired his first batter, but he followed an intentional walk with a non-intentional one to force in another run, then allowed an RBI groundout for the final tally on his line. It's been a very rough September for the right-hander, who has posted an uncharacteristic 11.57 ERA, 2.43 WHIP and 6:9 K:BB while taking five losses over nine appearances spanning seven innings this month. Treinen was a big part of Los Angeles' run to the championship last year, but it's fair to wonder if manager Dave Roberts will feel comfortable going to him in high-leverage situations at the start of the postseason given Treinen's recent struggles.