Pete Alonso reached a major career milestone under the most cinematic circumstances imaginable, hitting his 300th career home run on September 15 at Citi Field against the New York Mets, the franchise where he spent the first seven seasons of his Major League Baseball career. Playing for the Baltimore Orioles, Alonso delivered a signature moment in a high-stakes American League wild-card race, propelling his new club to a hard-fought victory while sparking an unforgettable reaction from the Flushing faithful.
The milestone blast occurred in dramatic fashion during the top of the ninth inning. Alonso stepped to the plate against Mets right-hander Kodai Senga and launched a Statcast-projected 414-foot solo home run to left-center field. The no-doubt shot tied the game at 5-5, setting the stage for Baltimore’s eventual 7-5 win in 11 innings, capped by Coby Mayo’s three-run inside-the-park home run.
“It was like a movie,” Orioles right-hander Shane Baz told MLB.com, echoing the sentiments of a dugout electrified by the moment. For Alonso, the milestone ball landed in a familiar place—marking his 124th home run at Citi Field, but his very first hit in the venue wearing visiting gray.
The immediate aftermath captured the unique emotional pull of baseball history. As the ball cleared the wall, Alonso flipped his bat toward the visiting dugout, mirroring iconic celebrations from his tenure in Queens. What followed next caught many observers off guard: a resounding, full-throated curtain call from Mets fans.
Encouraged by his Baltimore teammates, Alonso stepped up the dugout steps to tip his cap and acknowledge the crowd. “I haven’t really seen a curtain call from a guy wearing gray pants, so that was kind of cool,” Orioles manager Craig Albernaz told MLB.com. “The dugout was fired up for Pete, for a lot of different reasons.”
The warm reception extended across the entire series. According to MLB.com, fans chanted Alonso’s name after the national anthem and during pregame warmups, accompanying a tribute video played prior to the first pitch. Senga noted through an interpreter that the crowd reaction demonstrated the enduring affection the New York fan base holds for their former slugger, remarking that the noise made it difficult to even hear PitchCom signals immediately following the play.
Not everyone in the home dugout shared the fans’ enthusiasm, however. The emotional split among the Mets highlighted underlying tensions during a difficult 2026 campaign. While Alonso received loud cheers, sections of the crowd also chanted for the dismissal of Mets president of baseball operations David Stearns, mirroring demonstrations seen earlier in the week.
Mets clubhouse leader Sean Manaea expressed open frustration with the home crowd’s reaction toward an opposing player during a postgame interview with The Athletic. “It’s just crazy how things unfolded,” Manaea said. “I have nothing but respect for him and love him to death. As the 2026 Mets, we’ve definitely underperformed. But the guys in here work their ass off every single day, and to have that kind of reaction to an opposing player is crazy to me.”
Manager Andy Green maintained a neutral stance when questioned by reporters about the unprecedented scene, noting that while fans are free to express themselves, the team’s internal focus remains fixed on the field.
With the milestone behind him, Alonso quickly shifted his focus back to the team standings. According to MLB.com, the victory keeps the Orioles locked in an intense American League wild-card race, sitting three games behind the Cleveland Guardians with ten games remaining in the regular season. Alonso became the 19th active player to reach 300 home runs and the 20th player in AL/NL history to hit his 300th long ball against his former club, joining a list most recently updated by Andrew McCutchen in April 2024.
“No. 300, it’s a nice round number. But I’m just so proud of this group,” Alonso told MLB.com. “We want to be in October, and all these games count.”
Baltimore continues its crucial late-season schedule as the playoff race enters its final week, with every game carrying postseason implications.
