Bummer allowed three runs on four hits and no walks while striking out one batter over two innings in a no-decision as an opener against St. Louis on Saturday.

EDGE Analysis

Bummer was tabbed to open the bullpen game for Atlanta and gave the team two innings. While he was able to keep the ball in the strike zone, throwing 21 of 33 pitches for strikes and issuing zero free passes, he was tagged for three runs in the second frame, with two of the runs coming on a Nolan Gorman homer. It's not yet clear how Atlanta plans to fill the rotation spot that opened when Spencer Schwellenbach (elbow) landed on the injured list in early July, so Bummer could be called upon to fill the same role after the All-Star break, though the team figures to eventually settle upon a traditional starter.

Bummer will serve as Atlanta's opening pitcher in a bullpen game Saturday against the Cardinals.

EDGE Analysis

For the second Saturday in a row, Bummer will fill an opener role in a bullpen game while Atlanta has yet to settle on a permanent replacement in the rotation for Spencer Schwellenbach (elbow), who is likely to be sidelined until around September. In his previous turn as an opener last weekend against the Orioles, Bummer covered 2.1 innings, and Atlanta could be looking for him to handle a similar workload Saturday. Atlanta doesn't have an obvious candidate to serve as a bulk reliever behind Bummer, though Jesse Chavez and the newly claimed Joey Wentz are available on three days' rest and should be capable of covering multiple frames, if needed.

Bummer will start Saturday's game against the Orioles, Mark Bowman of MLB.com reports.

EDGE Analysis

Atlanta is going to lean on its bullpen to get through Saturday's contest, and Bummer will officially take the mound for the first inning. The 31-year-old owns a 2.86 ERA and 1.18 WHIP through 34.2 frames on the year.

Atlanta activated Bummer from the bereavement list Monday.

EDGE Analysis

Bummer missed the weekend series against the Rays but has rejoined the club for its early-week series in Toronto. The southpaw has yielded three runs with a 7:4 K:BB over five innings this season.

Atlanta placed Bummer on the bereavement list Friday.

EDGE Analysis

Bummer will miss at least the weekend series in Tampa Bay but could rejoin the club early next week in Toronto. Zach Thompson has taken his spot in the bullpen.

Bummer (0-1) took the loss against the Padres on Saturday, allowing one run on one hit and one walk while striking out two across two-thirds of an inning.

EDGE Analysis

Bummer was called into action for the seventh inning after Spencer Schwellenbach tossed six scoreless frames. Bummer came out firing with two straight strikeouts, but he was lifted after giving up a ground-rule double from Jake Cronenworth and intentionally walking Xander Bogaerts. Yuli Gurriel proceeded to knock an RBI single off Daysbel Hernandez, and the run was credited to Bummer, who came away with the loss after Atlanta failed to score over the next two innings. Bummer has given up a run in each of his first two outings of the 2025 season.

Bummer has a 0.00 ERA and 4:1 K:BB through five Grapefruit League innings.

EDGE Analysis

The southpaw will be part of Atlanta's setup crew this season, along with right-hander Pierce Johnson and fellow lefty Dylan Lee. Bummer recorded a career-high 27 holds back in 2019 with the White Sox, and he could approach that number in 2025 given his impressive stuff -- he generated a 43.9 percent whiff rate with his sweeper last season, and no pitcher in baseball had a lower barrel rate allowed than his 1.3 percent.

Bummer is expected to become Atlanta's top left-handed setup man in front of closer Raisel Iglesias following the offseason departure of A.J. Minter (hip), David O'Brien of The Athletic reports.

EDGE Analysis

After recording 46 holds over his last three years with the White Sox, Bummer was dealt to Atlanta in November 2023 but had a bumpy 2024 debut with his new team, managing only two holds in 56 regular-season appearances with a 3.58 ERA, 1.43 WHIP and 69:18 K:BB over 55.1 innings. The 31-year-old was the victim of some extraordinary bad luck however, as highlighted by his 2.22 FIP -- Bummer's barrel rate was in the 100th percentile and his groundball rate in the 98th percentile, but the squibs and flares he gave up kept finding holes. Dylan Lee could also see plenty of high-leverage work against southpaw hitters, but Bummer will get first crack at being the eighth-inning bridge to Iglesias, along with right-hander Pierce Johnson.

Bummer signed a two-year, $13 million contract with Atlanta on Saturday.

EDGE Analysis

Bummer's original deal included two club options over the next two years, worth $7.25 million and $7.5 million, respectively. However, his latest contract will void those two option years while saving the team a bit of cash, as the left-hander is now due to make $3.5 million in 2025. The 31-year-old finished with a 3.58 ERA and 1.43 WHIP across 55.1 innings during his first season in Atlanta.

Atlanta president of baseball operations Alex Anthopoulos said Friday that the team plans to pick up Bummer's $7.25 million club option for 2025, Grant McAuley of 92.9 The Game Atlanta reports.

EDGE Analysis

Bummer, 31, held a 3.58 ERA and 69:18 K:BB over 55.1 innings in 2024 in his first season in Atlanta. The left-hander could have an even more important role in 2025 with A.J. Minter heading into free agency and recovering from hip surgery.