The Philadelphia Phillies were 9–19 and tied for baseball’s worst record on April 28 when president of baseball operations Dave Dombrowski dismissed manager Rob Thomson. Bench coach Don Mattingly took over hours before a home game against the San Francisco Giants. From that point forward, the season flipped. The Phillies won five straight series, climbing from ten games under .500 to the edge of even and into second place in the NL East. Their surge shows how Phillies series wins after a managerial change in 2026 transformed a season on the brink into a playoff chase.
Measuring the Turnaround in Phillies Series Wins after Managerial Change in 2026
Under Thomson, the Phillies went 9–19 with a run differential of minus‑47, and their playoff odds fell to 14.1 percent. Trea Turner hit .233 through the first month, and Alec Bohm struggled so severely he was benched for the first time in his career.
Since Mattingly’s first game, however, the numbers tell a different story. The Phillies posted a 12–4 record through May 15, and their run differential turned positive. The rotation — led by Zack Wheeler, Andrew Painter, and Jesús Luzardo — dominated. They held the Boston Red Sox to two earned runs across 18 1/3 innings in a three‑game sweep at Fenway Park. For the month of May, Phillies pitchers recorded a 3.23 ERA, fueling the team’s rapid climb.
How Schwarber, Pitching, and the Stars Aligned
No player symbolized the turnaround more than Kyle Schwarber. He homered in seven straight games and launched his league‑leading 18th home run on May 14. That blast broke a scoreless tie in the eighth inning against Red Sox left‑hander Tyler Samaniego and secured the Phillies’ fifth straight series win.
Schwarber’s underlying metrics backed up the production. His barrel rate reached 23.2 percent, his average exit velocity sat at 92.7 mph, and his expected slugging percentage was .557. He wasn’t benefiting from luck — he was driving the baseball with authority.
The rest of the lineup began to heat up as well. Brandon Marsh carried a 12‑game hitting streak into mid‑May. Bohm returned from his benching with a three‑hit, two‑homer performance against the Colorado Rockies, signaling that Mattingly’s accountability message resonated. Bryson Stott added timely hits, and Bryce Harper remained steady with a .281 average and ten home runs.
Mattingly simplified the approach, allowing the roster’s talent to take over. As a result, the bullpen stabilized. José Alvarado, Orion Kerkering, and Jhoan Duran formed a dominant late‑inning trio. The defense improved, too — Turner made a run‑saving diving stop in the hole at Fenway Park, preserving a scoreless tie that set the stage for Schwarber’s decisive homer.
The Phillies also became the first team since the 2005 New York Mets to win five straight series immediately after losing six in a row. Their playoff odds jumped from 14.1 percent to more than 27 percent in merely 18 days. A club that could not win a series suddenly could not lose one. The Phillies series wins after a managerial change in 2026 turned a collapsing season into a legitimate October pursuit.
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