Chicago White Sox rookie Braden Montgomery makes MLB history in debut

Chicago White Sox rookie Braden Montgomery had a Major League debut that he will remember forever.

The White Sox’s No.2 prospect (21st-best prospect in Major League Baseball) collected two hits in his five trips to the plate. Montgomery’s first hit came off Atlanta Braves right-hander Grant Holmes.

Montgomery also collected his first home run, a walk-off home run in the bottom of the 10th inning (6-5). The 23-year-old clobbered a 0-1 changeup (90 miles per hour) that Braves closer Raisel Iglesias left over the middle of the plate, which he deposited into left field.

According to Elias Sports and Sarah Langs, Montgomery is the fifth player in Major League Baseball history to hit his first home run as a walk-off home run in his MLB debut. The four others include: Carlos Perez (2015) with the Los Angeles Angels, Miguel Cabrera (2003) with the Florida (Miami) Marlins, Josh Bard (2002) with the Cleveland Indians (Guardians) and Billy Parker (1971) with the California (Los Angeles) Angels.

Walk-off home run in MLB debut, MLB history:

6/9/26 Braden Montgomery
5/5/2015 Carlos Perez
6/20/2003 Miguel Cabrera
8/23/2002 Josh Bard
9/9/1971 Billy Parker                   
                     
FIFTH EVER!!!

h/t @EliasSports https://t.co/uIYByqx4TQ

— Sarah Langs (@SlangsOnSports) June 10, 2026

Braden Montgomery was in disbelief that he had such a debut with the Chicago White Sox

Mobbed by his teammates at the plate after walking it off, the Des Moines, Iowa native was in disbelief at what he had done, calling the experience “unreal” at his locker.

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“That was … I still don’t know what to say,” said Montgomery to MLB.com’s Scott Merkin, standing in front of his locker after emerging unscathed from the postgame frenzy. “That was unreal.”

Montgomery’s teammate, closer Grant Taylor, echoed his teammate, also calling the experience “unreal.”

“It was unreal,” echoed reliever Grant Taylor, who earned the victory by allowing one unearned run over two innings of relief. “That’s probably the coolest debut of all-time.”

Montgomery had been impressive at both Double-A Birmingham and Triple-A Charlotte, which got him the call-up to the big leagues. Between the two levels, Montgomery batted .313 with a 1.035 OPS in Double-A, while hitting .315 and had an OPS of .912 at Triple-A.

Playing right field in his debut, Montgomery can expect to play there and center field (when Tristin Peters needs a day off) for the foreseeable future. Especially with Austin Hays out for longer than expected, as he was transferred to the 60-day injured list on Tuesday.

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