Sem Robberse

Sem Robberse

23-Year-Old PitcherP
St. Louis Cardinals AAA
60-Day IL
Injury Elbow
Est. Return 7/1/2026
2025 Fantasy Outlook
Robberse was added to the Cardinals' 40-man roster last offseason and looked like he might be on the precipice of a major-league promotion after he collected a 1.77 ERA and 35:7 K:BB over 35.2 frames in his first six starts with Triple-A Memphis. However, he then went through a rough patch (7.50 ERA in his next seven starts) before missing two months of action with an elbow problem. Robberse finished the season healthy and might have a shot to debut at some point next season, but a return to Memphis initially is a safe bet. The 23-year-old's fastball lacks velocity and movement, but he at least seems aware of that and has leaned more into his cutter, changeup and slider. Even if Robberse is able to maximize his pitch mix, it's a profile at present that doesn't appear likely to bear fantasy fruit. Read Past Outlooks
$Signed a one-year contract with the Cardinals in March of 2025.
Needs Tommy John surgery
PSt. Louis Cardinals  AAA
Elbow
May 14, 2025
Robberse is set to undergo season-ending Tommy John surgery on his right elbow, Derrick Goold of the St. Louis Post-Dispatch reports.
ANALYSIS
Robberse missed time during the second half of last season with an elbow injury and recent imaging showed that he needs to have the elbow surgically repaired. Given the timing of the procedure, he will likely be sidelined until around midseason next year. Robberse holds a 4.96 ERA and 139:59 K:BB over 134.1 innings at the Triple-A level.
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Pitching Stats
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Minor League Game Log
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Minor League Left/Right Pitching Splits (AAA)
Since 2023
 
 
-22%
BAA vs LHP
2025
 
 
-60%
BAA vs RHP
2024
 
 
-44%
BAA vs LHP
2023
 
 
-15%
BAA vs LHP
BAA Batters K BB H 2B 3B HR
Since 2023vs Left .231 292 71 39 57 10 1 12
Since 2023vs Right .295 301 68 20 81 15 1 9
2025vs Left .565 30 5 6 13 1 1 2
2025vs Right .227 47 14 2 10 1 0 0
2024vs Left .174 180 46 17 28 4 0 7
2024vs Right .312 168 30 10 48 10 0 6
2023vs Left .254 82 20 16 16 5 0 3
2023vs Right .299 86 24 8 23 4 1 3
Prospect Rankings History
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Defensive Stats
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Stats Vs Today's Lineup
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Shifted to full-season IL
PSt. Louis Cardinals  AAA
Undisclosed
May 14, 2025
Robberse (undisclosed) has been transferred to the full-season injured list at Triple-A Memphis.
ANALYSIS
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Shelved at Triple-A
PSt. Louis Cardinals  AAA
Undisclosed
May 7, 2025
Triple-A Memphis placed Robberse on its 7-day injured list April 21 due to an unspecified injury.
ANALYSIS
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Sent to Triple-A
PSt. Louis Cardinals  AAA
March 7, 2025
The Cardinals optioned Robberse to Triple-A Memphis on Friday.
ANALYSIS
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Lifted from IL
PSt. Louis Cardinals  AAA
September 4, 2024
Robberse (elbow) was activated from Triple-A Memphis' 7-day injured list Wednesday.
ANALYSIS
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Working back from elbow injury
PSt. Louis Cardinals  AAA
Elbow
August 28, 2024
Robberse (elbow) gave up one run on four hits and one walk while striking out three over three innings in a rehab start for Single-A Palm Beach on Tuesday.
ANALYSIS
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Latest Fantasy Rumors
Debut possible this weekend?
PSt. Louis Cardinals  AAA
May 21, 2024
Robberse isn't listed as a probable starter for Triple-A Memphis this week, and he's a candidate to be called up by the Cardinals to start Saturday versus the Cubs, reports Jeff Jones of the Belleville News-Democrat.
ANALYSIS
Robberse last pitched Sunday and gave up six runs over seven innings, so in terms of rest, he lines up well as an option for Saturday. The right-hander is one of St. Louis' top prospects and has a 3.29 ERA over 54.2 innings at Memphis this season, though he's allowed six runs in two of his past three starts.
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