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
Signed a $644,800 contract with the Blue Jays in July of 2021.
Closing in on live BP
Tiedemann (elbow) has touched 95 mph while throwing from flat ground during his rehab, and he could progress to live bullpen sessions before the end of July, Mitch Bannon of The Athletic reports.
Analysis
The 22-year-old southpaw underwent Tommy John surgery last July, and while the Blue Jays haven't ruled out Tiedemann seeing game action before the end of 2025, the timeline is getting tight. If he is able to pitch in games before the end of the season, it's possible he could make his big-league debut in a relief role, although Toronto hasn't given up on him as a long-term rotation option if he can stay healthy.
The 22-year-old southpaw underwent Tommy John surgery last July, and while the Blue Jays haven't ruled out Tiedemann seeing game action before the end of 2025, the timeline is getting tight. If he is able to pitch in games before the end of the season, it's possible he could make his big-league debut in a relief role, although Toronto hasn't given up on him as a long-term rotation option if he can stay healthy.
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
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Defensive Stats
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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
Aiming for late-2025 return
Tiedemann (elbow) said Friday that he hopes to be ready to pitch in games before the end of the 2025 season, Keegan Matheson of MLB.com reports.
Analysis
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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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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.