Kyle Schwarber etched his name into the MLB history books on Thursday, becoming just the ninth active player to reach the 350-home run milestone. But the veteran slugger's achievement was merely the opening act in a thrilling doubleheader opener that saw the Philadelphia Phillies walk off the San Francisco Giants 3-2 at Citizens Bank Park.

Schwarber's blast came in the bottom of the first inning, a towering 406-foot shot off Giants starter Logan Webb that cleared the second deck in right field. The solo homer cut San Francisco's early 2-0 lead in half and gave the Phillies faithful something to cheer about. For a team that had lost nine of its last 12 games entering the day, every spark mattered.

Since Don Mattingly took over as interim manager following Rob Thomson's firing, the Phillies have looked like a different club. Thursday's win marked their second straight victory—the first time they've accomplished that feat since the first week of April. Mattingly, who famously guided the 2013 Los Angeles Dodgers through a midseason turnaround, is hoping to work similar magic in Philadelphia.

The game remained 2-1 until the bottom of the ninth, when the Phillies mounted their comeback. Adolis García led off with an infield single, and Bryson Stott followed with a game-tying triple down the right-field line. With Stott on third and two outs, rookie outfielder Justin Crawford stepped to the plate. The 2022 first-round pick went the opposite way, beating out an infield single to plate the winning run.

At 22 years old, Crawford joined exclusive company. According to MLB.com's Sarah Langs, he became just the second Phillies player in the last 50 years to record multiple walk-off RBI at age 22 or younger, matching Hall of Famer Scott Rolen.

The win improved Philadelphia to 11-19, while the Giants fell to 13-17. With Mattingly at the helm and momentum building, the Phillies are hoping this is the start of a turnaround worthy of their franchise-record payroll.