Quinn Mathews is a 25-year-old left-handed pitcher who made his MLB debut on August 1, 2026, with the St. Louis Cardinals. In his first taste of the big leagues, he put together a 3.62 ERA over 37.1 innings — a solid enough debut to keep the Redbirds interested in what comes next.
Quick Facts
- Full name: Quinn Mathews
- Position: Starting Pitcher
- Team: St. Louis Cardinals
- Jersey number: 60
- Bats / Throws: Left / Left
- Height / Weight: 6’5″ / 187 lbs
- Born: October 4, 2000 (25 years old)
- Hometown: Mission Viejo, California 🇺🇸
- MLB Debut: August 1, 2026
Background
Mathews grew up in Mission Viejo, California — a state that has produced no shortage of big-league talent. From early on, his left-handed stuff made him one of the more intriguing arms in the Cardinals’ system. St. Louis called him up in August 2026 to bolster the rotation, and at 25, he stepped into the role with the quiet confidence of a pitcher who knows he belongs.
Professional Career
Mathews’s rookie numbers tell the story of a young starter finding his footing: 2 wins, 3 losses, 36 strikeouts, a 1.39 WHIP, and a 3.62 ERA over 37.1 innings. The bumps were expected — they always are in year one — but the underlying numbers suggest he can hold his own in a major-league rotation. As a left-hander with clean mechanics, he fits the profile of a modern starter: versatile, competitive, and with room to grow as he builds durability and sharpens his command.
2026 Stats
- Team: St. Louis Cardinals
- ERA: 3.62
- W-L: 2-3
- Strikeouts: 36
- WHIP: 1.39
- Innings Pitched: 37.1
Awards and Milestones
Mathews is just getting started. No Gold Gloves, no MVP votes, no World Series rings — yet. Right now the mission is simple: lock down a rotation spot in St. Louis and get better every time he takes the ball.
One Thing to Know
Left-handed starters are always at a premium in baseball, and Mathews checks that box at 25 with his best years still ahead of him. He’s a California kid carrying on a long tradition of West Coast arms making noise in the big leagues — and Cardinals fans will be watching closely to see how far he can take it.

