60-Day IL
Injury Elbow
Est. Return 9/1/2025
2025 Stats
W-L
0-0
ERA
0.00
WHIP
0.00
K
0
SV
0
Rest-of-Season Projections
2025 Fantasy Outlook
Tiedemann underwent Tommy John surgery in late-July of 2024 and is unlikely to pitch in the majors until 2026. It was a predictable procedure for the talented southpaw, as he'd dealt with elbow and shoulder trouble since spring training of 2023. At his best, he'll show two monster offerings in his fastball and slider along with an above-average changeup and good enough command to start. Tiedemann could get some rehab appearances in after his 23rd birthday in August, but considering he's only logged 13 career innings at Triple-A and will likely have significant rust to knock off, a big-league debut in 2025 seems highly unlikely. He has never thrown 80 innings in a season, so even in 2026, Tiedemann's fantasy value will be affected by workload restrictions.. Read Past Outlooks
Aiming for late 2025 return
Tiedemann (elbow) hopes to be ready to pitch in games before the end of the 2025 season, Keegan Matheson of MLB.com reports.
ANALYSIS
Tiedemann underwent Tommy John surgery in late July of last year, so it's not a guarantee he'll be game-ready at any point this year. If he is, it's almost surely not going to come at the major-league level -- however, a minor-league stint late in 2025 would position the southpaw for a normal offseason next winter before he competes for a role on the 2026 Blue Jays. Tiedemann has some of the best pure stuff outside of the majors but has had a tough time staying healthy, with his career high of 78.2 innings coming back in 2022.
Tiedemann underwent Tommy John surgery in late July of last year, so it's not a guarantee he'll be game-ready at any point this year. If he is, it's almost surely not going to come at the major-league level -- however, a minor-league stint late in 2025 would position the southpaw for a normal offseason next winter before he competes for a role on the 2026 Blue Jays. Tiedemann has some of the best pure stuff outside of the majors but has had a tough time staying healthy, with his career high of 78.2 innings coming back in 2022.
Pitching Stats
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Minor League Game Log
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Minor League Left/Right Pitching Splits (AAA)
Since 2023
-30%
BAA vs LHP
2025
No Stats
| BAA | K | BB | H | HR | |
|---|---|---|---|---|---|
| Since 2023vs Left | .176 | 10 | 5 | 3 | 1 |
| Since 2023vs Right | .250 | 7 | 9 | 7 | 2 |
| 2025vs Left | 0 | 0 | 0 | 0 | 0 |
| 2025vs Right | 0 | 0 | 0 | 0 | 0 |
| 2024vs Left | .111 | 6 | 5 | 1 | 1 |
| 2024vs Right | .292 | 5 | 7 | 7 | 2 |
| 2023vs Left | .250 | 4 | 0 | 2 | 0 |
| 2023vs Right | .000 | 2 | 2 | 0 | 0 |
Prospect Rankings History
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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Past Fantasy Outlooks
2024
2023
A consensus top-five pitching prospect entering 2023, Tiedemann dazzled in spring training before missing a month with a sore shoulder. He exited his fourth start of the year at Double-A with biceps soreness, which ended up sidelining him for 10 weeks. Tiedemann returned to action in late-July and logged 10 full-season starts, primarily at Double-A, although he averaged less than three innings per outing as the Jays were extremely careful with his workload. The 21-year-old southpaw finished the year with one four-inning start at Triple-A and went to the Arizona Fall League to make up for lost time. He logged a 2.50 ERA, 1.11 WHIP and a 23:8 K:BB in in 18 innings across four AFL starts. Tiedemann's trademark plus changeup and slider were giving AFL hitters fits, and he touched 97 mph with his fastball. He dealt with multiple arm injuries and posted a 12 percent walk rate in 62 innings, so the red flags with Tiedemann are hard to miss. If he can hold up as a starter at Triple-A for a couple months, he could spend the rest of the season in the big-league rotation, but a zero in fantasy is also on the table for 2024.
More Fantasy News
Set for Tommy John surgery
Tiedemann (elbow) will undergo Tommy John surgery Tuesday, Keegan Matheson of MLB.com reports.
ANALYSIS
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Will receive third opinion
Blue Jays manager John Schneider said Wednesday that Tiedemann (forearm) will receive a third opinion from Dr. Neal ElAttrache, Kaitlyn McGrath of The Athletic reports.
ANALYSIS
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Heading for second opinion
Tiedemann (forearm) will go for a second opinion after imaging Friday showed no structural damage, Keegan Matheson of MLB.com reports.
ANALYSIS
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Avoids serious injury
Recent testing showed Tiedemann isn't dealing with any structural damage in his forearm or elbow, Scott Mitchell of TSN.ca reports.
ANALYSIS
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Exits Triple-A start early
Tiedemann was removed from his start Wednesday at Triple-A Buffalo due to left forearm tightness, Shi Davidi of Sportsnet.ca reports.
ANALYSIS
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Latest Fantasy Rumors
Second-half promotion possible
Tiedemann could be an option for the Blue Jays' rotation after the All-Star break, Kaitlyn McGrath of The Athletic reports.
ANALYSIS
Tiedemann experienced a meteoric rise up prospect lists as a result of a dominant 2022 season which saw him hold a 2.17 ERA, 0.86 WHIP and 117:29 K:BB over 78.2 innings across three levels. He won't turn 21 until August and "needs to be tested" at Triple-A first, per McGrath, but the talented left-hander might push to debut during the second half. He'll be in major-league camp this spring as a non-roster invitee.
Tiedemann experienced a meteoric rise up prospect lists as a result of a dominant 2022 season which saw him hold a 2.17 ERA, 0.86 WHIP and 117:29 K:BB over 78.2 innings across three levels. He won't turn 21 until August and "needs to be tested" at Triple-A first, per McGrath, but the talented left-hander might push to debut during the second half. He'll be in major-league camp this spring as a non-roster invitee.