Mautz and the Cardinals won't face the Reds on Sunday after the game was postponed due to inclement weather.
The two teams will make up the game as part of a split doubleheader Aug. 17. After being promoted from Triple-A Memphis earlier Sunday, Mautz had been scheduled to start the series finale in Cincinnati in what would have been his MLB debut. As a result of the postponement, the Cardinals won't have a need for a temporary sixth starter, so Mautz could be optioned back to Memphis during the upcoming week.
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Cardinals' Brycen Mautz: Recalled ahead of MLB debut
Rotowire
The Cardinals recalled Mautz from Triple-A Memphis ahead of his start against the Reds on Sunday.
St. Louis needed another starter after Saturday's doubleheader against Cincinnati and will turn to the Mautz to make his major-league debut in Sunday's series finale. The 24-year-old southpaw was named the Cardinals' Minor League Pitcher of the Year in 2025 after a strong season with Double-A Springfield and has pitched well in Triple-A this season, sporting a 2.90 ERA, 1.37 WHIP and 43:24 K:BB across 40.1 innings. Matt Svanson was optioned to Memphis in a corresponding move.
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Cardinals' Brycen Mautz: Slated for major-league debut
Rotowire
Mautz will be recalled from Triple-A Memphis to start Sunday against the Reds, Derrick Goold of the St. Louis Post-Dispatch reports.
The Cardinals need an extra starter after Saturday's doubleheader, and it will be the lefty Mautz getting the call for his major-league debut. Added to the 40-man roster last November, Mautz has pitched to a 2.90 ERA, 1.37 WHIP and 43:24 K:BB over 40.1 innings with Memphis so far. The 2022 second-round pick has allowed more than two earned runs in just one of his nine starts this season.
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Cardinals' Brycen Mautz: Dropped from big-league camp
Rotowire
The Cardinals optioned Mautz to Triple-A Memphis on Monday.
The Cardinals previously hadn't dismissed the possibility of Mautz making the team as a reliever, but he will begin the season in the rotation at Triple-A Memphis. Mautz posted a 2.98 ERA, 1.11 WHIP and 134:33 K:BB over 114.2 innings at Double-A Springfield in 2025.
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Cardinals' Brycen Mautz: In mix to fill relief role
Rotowire
Mautz is under consideration for a spot on the Cardinals' Opening Day roster in a relief or hybrid role, Derrick Goold of the St. Louis Post-Dispatch reports.
Mautz was added to the 40-man roster this offseason following a breakout year as a starter at Double-A Springfield, where he posted a 2.98 ERA, 1.11 WHIP and 134:33 K:BB over 114.2 innings. JoJo Romero is locked into one left-handed bullpen spot for the Cardinals, but he remains a trade candidate, and even if Romero stays put the team likely has at least one other lefty spot up for grabs. Mautz could fill that slot or be used in a hybrid role that would allow him to also make some spot starts. However, the most likely scenario is the southpaw opens the season in the Triple-A Memphis rotation to continue his development as a starting pitcher.
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Cardinals' Brycen Mautz: Protected from Rule 5 Draft
Rotowire
The Cardinals selected Mautz's contract from Double-A Springfield on Tuesday, John Denton of MLB.com reports.
Mautz spent all of 2025 at Springfield and turned in his best season yet, finishing with a 2.98 ERA and 1.11 WHIP alongside a 134:33 K:BB over 114.2 innings. The 24-year-old southpaw will be protected from the Rule 5 Draft now that he owns a spot on St. Louis' 40-man roster, and he'll most likely report to Triple-A Memphis to begin the 2026 season.
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