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Chicago White Sox infielder Colson Montgomery made unwanted history Friday, setting Major League Baseball’s single-season strikeout record during a game against the Colorado Rockies. The 24-year-old took a third strike against Colorado pitcher Tomoyuki Sugano, giving him 224 strikeouts for the season.
Montgomery’s record-breaking plate appearance came after a full-count battle. Sugano threw a fastball over the heart of the plate, and Montgomery watched it go by for the milestone strikeout. The moment surpassed the previous record of 223 strikeouts, set by former Arizona Diamondbacks infielder Mark Reynolds in 2009.
Chicago White Sox Infielder Breaks a Historic MLB Mark
The record arrived in Montgomery’s second major league season and his 631st plate appearance. He reached the mark in his 561st at-bat, placing his name in an unusual part of baseball history alongside Reynolds, whose aggressive power-hitting style made him one of the game’s most memorable sluggers.
While the strikeout total is significant, it does not tell the entire story of Montgomery’s season. Much like Reynolds during his record-setting year, Montgomery has delivered substantial power when making contact. He has hit 31 home runs and driven in 87 runs, contributing to a Chicago club competing in the postseason picture.
- 224 strikeouts, the most in a single MLB season
- 31 home runs and 87 RBIs
- 35.5% strikeout rate among qualified hitters
- .199 batting average after a difficult late-season stretch
A Powerful Bat Paired With Growing Contact Concerns
Montgomery’s strikeout rate has climbed sharply compared with his rookie season. His 35.5% rate is the second-worst figure among qualified hitters, trailing only his teammate Munetaka Murakami, who owns a 35.6% mark.
The increase has become even more pronounced recently. Over his past 21 games, Montgomery is batting .085 with 37 strikeouts in 83 plate appearances. During that span, he has recorded six hits, including two home runs and two doubles, while adding eight RBIs and eight walks.
That stretch has pulled his season batting average down to .199. For the White Sox, the challenge is finding a way to preserve Montgomery’s power while helping him make more consistent contact and control the strike zone.
Why Montgomery’s Development Matters for Chicago
Montgomery remains a young player with an impactful offensive ceiling. His home run and RBI totals show that he can change games with one swing, even during a prolonged slump. However, the record-setting strikeout total also highlights an important development area as the Chicago White Sox evaluate their lineup and long-term roster.
Improving pitch recognition could be central to Montgomery’s next step. His chase and strikeout rates have risen from his rookie season, making it more difficult for him to reach base consistently. Opposing pitchers may also be challenging him with more breaking balls and fastballs in the strike zone, testing whether he can adjust as the league gains more information about his approach.
For now, the White Sox will likely focus on balancing patience with production. Montgomery’s power gives him a chance to remain a dangerous middle-of-the-order hitter, but reducing empty swings will be essential if he is to become a more complete offensive player.
What Comes Next for the White Sox Star?
The record is unlikely to define Montgomery’s entire career, but it will remain a notable part of his second MLB season. Mark Reynolds paired his 223 strikeouts in 2009 with 44 home runs, demonstrating how a high-risk approach can still produce valuable power. Montgomery’s 31 home runs and 87 RBIs offer a similar reminder that strikeout totals must be viewed alongside overall offensive impact.
As the season moves toward its conclusion, Montgomery has an opportunity to respond on the field. A stronger finish would not erase the record, but it could provide encouragement for the player and the organization heading into the offseason.
The Chicago White Sox will continue monitoring Montgomery’s plate discipline, contact quality and ability to adjust against major league pitching. His power is already clear. The next challenge is turning that power into more consistent production.
Frequently Asked Questions
Who set the MLB single-season strikeout record?
Colson Montgomery of the Chicago White Sox set the record with 224 strikeouts in the 2026 season.
Whose record did Colson Montgomery break?
Montgomery surpassed Mark Reynolds, who struck out 223 times for the Arizona Diamondbacks in 2009.
How many home runs does Montgomery have?
Montgomery has hit 31 home runs and recorded 87 RBIs during the season covered in the report.
What is Colson Montgomery’s strikeout rate?
His strikeout rate is 35.5%, the second-worst rate among qualified hitters, according to the report.
How has Montgomery performed recently?
Over his last 21 games, Montgomery is batting .085 with 37 strikeouts in 83 plate appearances.
