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Toronto placed Taillon on the 15-day injured list with right forearm tendinitis on Tuesday, Keegan Matheson of MLB.com reports.
Taillon completed just four innings Monday against Boston before being removed with discomfort in his right forearm. The 34-year-old will head to the IL for the second time this season and first time as a member of the Blue Jays. The right-hander made just two starts for Toronto since being dealt to the club on Aug. 2 from the Cubs. The Blue Jays recalled Chase Lee from Triple-A Buffalo to take Taillon's spot on the active roster.
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Blue Jays' Jameson Taillon: Diagnosed with forearm discomfort
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Taillon left Monday's start against Boston with right forearm discomfort, Hazel Mae of Sportsnet reports.
Taillon appeared to be in some sort of discomfort after completing his fourth inning of work, and the club revealed shortly after that his departure was related to a forearm issue. He'll presumably be sent for further testing over the next few days to determine next steps.
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Blue Jays' Jameson Taillon: Exits with apparent injury
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Taillon exited Monday's start against the Red Sox with an apparent injury, Thomas Hall of MLB.com reports. He allowed one hit and three walks while striking out three over four scoreless innings before departing.
Taillon made it through four innings unscathed, but as Hall notes, he made a motion to the Toronto training staff after wrapping up his fourth inning of work and was promptly removed. It's also worth noting that the right-hander's velocity noticeably dipped in the top of the fourth inning prior to his exit. Taillon can be considered day-to-day until the team has more information to share.
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Blue Jays' Jameson Taillon: Remaining in rotation
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Taillon is listed as the Blue Jays' probable starting pitcher for Monday's game against the Red Sox at Rogers Centre.
After being acquired from the Cubs on Aug. 2, Taillon made his Blue Jays debut three days later and took a no-decision against the Astros, allowing three earned runs on six hits and two walks over four innings. The 34-year-old should be able to stick around in the rotation until one of Trey Yesavage (knee) or Spencer Arrighetti (foot) are activated from the injured list, but Taillon has offered little reason to get inspired about his fantasy prospects. Over 16 starts this season, he's surrendered a whopping 26 home runs in 80 innings and has supplied a 5.96 ERA, 1.39 WHIP and 72:29 K:BB.
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Blue Jays' Jameson Taillon: Shaky in Jays debut
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Taillon didn't factor into the decision in Wednesday's 5-4 extra-inning win over the Astros, giving up three runs on six hits and two walks over four innings. He struck out four.
All the damage off Taillon came in the third inning, highlighted by a Jose Altuve solo shot. It wasn't an impressive Toronto debut for the veteran righty, who got lifted after 80 pitches (49 strikes), but he was taken off the hook for the loss when his new teammates got to Hunter Brown for three runs of their own in the sixth. Taillon will continue to round out the rotation until Trey Yesavage (knee) or Spencer Arrighetti (foot) are cleared to return, and he'll take a 5.96 ERA, 1.39 WHIP and 72:29 K:BB through 80 innings on the season into his next start, which lines up to come at home early next week against the Red Sox.
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Blue Jays' Jameson Taillon: Will start Wednesday
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Taillon will start Wednesday's game against the Astros in Houston, Shi Davidi of Sportsnet.ca reports.
The Blue Jays are moving to a six-man rotation for the time being, and Taillon looks poised to occupy a spot at least until Spencer Arrighetti (foot) is ready to return from the injured list. In 15 starts with the Cubs this season, Taillon pitched to an ugly 5.92 ERA, 1.36 WHIP and 68:27 K:BB across 76 innings. He also surrendered 25 home runs during that span.
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Blue Jays' Jameson Taillon: Shipped to Toronto
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The Blue Jays acquired Taillon from the Cubs on Sunday in exchange for cash or a player to be named later, Mitch Bannon of The Athletic reports.
The veteran right-hander was designated for assignment by the Cubs on Monday, and the Blue Jays elected to secure his services via trade rather than risk another team claiming him on waivers. Unless Toronto shifts to a six-man rotation, Taillon doesn't cleanly fit into the club's starting plans, but that could change soon with Kevin Gausman and Shane Bieber being candidates to be moved ahead of Monday's trade deadline.
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Cubs' Jameson Taillon: DFA'd by Chicago
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The Cubs designated Taillon for assignment Monday.
Taillon has been a staple in the Chicago rotation for the last three-plus seasons, but the 34-year-old right-hander declined precipitously in 2026. His 5.92 ERA over his 15 starts was by far the worst mark of his career, and most of Taillon's underlying metrics (5.86 xERA, 4.53 SIERA) didn't point to a major turnaround in his performance even if his bloated 21.4 HR/FB% had returned to a more normal level. Rather than moving Taillon to a bullpen role, the Cubs will drop him from the 40-man roster and look to find a taker for him via trade. However, Chicago would presumably have to eat a significant amount of the money remaining on Taillon's $18 million salary for 2026 to facilitate any deal. If the Cubs can't work out a trade, Taillon will be exposed to waivers and would likely be released once he clears.
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Cubs' Jameson Taillon: Hit hard in sixth loss
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Taillon (2-6) took the loss Sunday against the Pirates, allowing seven runs on six hits and two walks in four innings. He struck out three.
Taillon was clobbered by the Pittsburgh bats Sunday, serving up three home runs and a double as well. The 34-year-old right-hander has been stung by the long ball all year long -- he's tied with Zack Littell and Aaron Nola for the National League lead with 25 homers allowed despite making six fewer appearances than those other two hurlers. Taillon is set to bring a 5.92 ERA, his career-worst mark, 1.36 WHIP and 68:27 K:BB over 76 innings into a tough matchup against the Yankees.
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Cubs' Jameson Taillon: Allows four runs in return from IL
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Taillon did not factor into the decision of Monday's extra-inning loss, allowing four runs on five hits and two walks over 4.1 innings against the Tigers. He struck out six.
Making his first start since June 7 after landing on the injured list with a left hamstring strain, Taillon was ambushed early, allowing all four runs in the first inning on back-to-back homers by Riley Greene and Dillon Dingler. It has been a challenging season for Taillon, as after posting an ERA below 4.00 and winning at least 10 games in each of the past two regular seasons, the veteran right-hander has stumbled to a 2-5 record with a 5.38 ERA, 1.32 WHIP and 65:25 K:BB across 72 innings (14 starts) in 2026. His next outing is tentatively scheduled for Sunday against the Pirates.
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Cubs' Jameson Taillon: Activated ahead of Monday's outing
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The Cubs activated Taillon (hamstring) from the 15-day injured list Monday, Patrick Mooney of The Athletic reports.
Taillon will rejoin the Cubs' rotation with a start Monday against the Tigers after missing the last six weeks of action with a strained left hamstring. The veteran right-hander threw only 53 pitches in his last rehab start with Triple-A Iowa, so he will be relatively limited from a workload perspective versus Detroit.
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Cubs' Jameson Taillon: Returning against Tigers
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Manager Craig Counsell said Friday that Taillon (hamstring) will return from the injured list during the Cubs' upcoming series against the Tigers, Jesse Rogers of ESPN.com reports.
It's still unknown exactly which game of the series Taillon will start, but the Cubs should announce their pitching plans later this weekend. The 34-year-old righty has been on the shelf since June 9 due to a strained left hamstring but was cleared to begin pitching in minor-league games July 5. He gave up just one walk and one hit while striking out three batters in 4.2 shutout innings during his most recent outing at Triple-A Iowa but threw just 53 pitches, so he could have a workload restriction in place while he makes his second-half debut.
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Cubs' Jameson Taillon: Appears ready to return from IL
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Taillon (hamstring) struck out three and allowed one hit and one walk over 4.2 scoreless innings in a rehab start Saturday with Triple-A Iowa.
Making the second start of his rehab assignment, Taillon built up to 53 pitches (34 strikes) and posted an excellent Called Strikes plus Whiffs rate of 32.1 percent. According to MLB.com, Taillon is slated to throw during the All-Star break, and if the Cubs' coaching and training staffs are satisfied with how he looks, the veteran right-hander should rejoin the big-league rotation to begin the second half. Taillon has been on the shelf since June 9 due to a left hamstring strain.
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Cubs' Jameson Taillon: Headed for another rehab start
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Cubs manager Craig Counsell said Tuesday that Taillon (hamstring) is expected to make another rehab start before returning from the 15-day injured list, Meghan Montemurro of the Chicago Tribune reports.
Though Taillon joined the team in Baltimore for the start of their six-game road trip, Counsell said that the right-hander won't be activated this week unless the Cubs lose one of their healthy starters to an injury and have to adjust the rotation on the fly. Assuming Taillon isn't needed, he'll report to an affiliate over the weekend to make the second start of his rehab assignment before returning from the IL following the All-Star break. Taillon made his first rehab start this past Sunday at High-A South Bend, tossing 3.1 innings and 45 pitches (32 strikes) while striking out two and allowing one run on four hits and zero walks.
Taillon (hamstring) will begin a rehab assignment with Triple-A Iowa on Sunday, Taylor McGregor of Marquee Sports Network reports.
Taillon has missed a little more than three weeks as he works his way back from a left hamstring strain, and he's progressed enough to test himself in a game setting. The right-hander has a chance to rejoin the Cubs rotation for one start before the All-Star break, assuming he comes out of Sunday's outing with no issues and gets his pitch count up to a sufficient level.
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Cubs' Jameson Taillon: Could return before ASB
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Manager Craig Counsell said Friday that there's a chance Taillon (hamstring) will return from the injured list before the All-Star break, Vinnie Duber of the Chicago Sun-Times reports.
The Cubs initially believed that Taillon would be out through the break when he landed on the injured list with a strained left hamstring, but he's been ahead of schedule in his rehab. Counsell noted that the right-hander would make just one brief start if he were to pitch again in the first half, but his return would still be well-received by a Cubs team that currently has five starting pitchers on the injured list.
Cubs' Jameson Taillon: Expected to miss more than month
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Taillon (hamstring) is expected to be sidelined until after the All-Star break, Vinnie Duber of the Chicago Sun-Times reports.
Taillon landed on the 15-day injured list with a left hamstring strain Tuesday, and manager Craig Counsell outlined that the right-hander is not expected to be able to return to action until mid-to-late July. Javier Assad will likely replace Taillon in the Cubs' starting rotation in the meantime, while Shota Imanaga is now the last remaining arm from the team's Opening Day rotation that hasn't spent time on the IL this season.
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Cubs' Jameson Taillon: Officially placed on IL
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The Cubs placed Taillon on the 15-day injured list Tuesday with a left hamstring strain, Vinnie Duber of the Chicago Sun-Times reports.
Taillon was able to make it through just one inning during his start Sunday before exiting with a strained hamstring, and he'll now officially have to wait at least two more weeks before making his next appearance on a big-league mound. Ethan Roberts was recalled from Triple-A Iowa in a corresponding move, and Javier Assad, who pitched 6.1 innings following Taillon's removal Sunday, is a likely candidate to move into the Cubs' rotation.
