Sean Guenther: Player News

Rotoworld

Sean Guenther

FA Relief Pitcher #73
Player Stats

Personalize your Rotoworld feed by favoriting players

Link copied to clipboard!

Tigers released LHP Sean Guenther.

The 30-year-old southpaw had been stationed at Triple-A Toledo where he registered a 5.40 ERA, 1.68 WHIP and a 15/5 K/BB ratio over 16 2/3 innings in 12 appearances during an injury-plagued campaign. He’s now free to explore opportunities on the open market.
- David Shovein

Transaction

More Sean Guenther News
Sean Guenther

DET Relief Pitcher #73
Player Stats

Link copied to clipboard!

Tigers re-signed LHP Sean Guenther to a minor league contract with an invitation to spring training.

Guenther fortifies Detroit’s left-handed relief depth after being non-tendered last month by the club. The 29-year-old southpaw posted a 5.23 ERA — 3.04 FIP — 1.45 WHIP and 8/5 K/BB ratio over 10 1/3 innings across nine appearances for the Tigers this past season before undergoing season-ending hip surgery in early July.

Transaction

More Sean Guenther News
Jason Foley

DET Relief Pitcher #68
Player Stats

Link copied to clipboard!
Tigers designated RHP Jason Foley, RHP Tanner Rainey, LHP Sean Guenther, RHP Dugan Darnell, RHP Tyler Mattison and RHP Jack Little for assignment.

Foley is the most prominent name here as Detroit clears out several spots on the 40-man roster by booting nearly a half-dozen relievers from the mix. The 30-year-old former closer is recovering from shoulder surgery and won’t be an option until the second half of next season.

Transaction
Tanner Rainey

Dugan Darnell

Sean Guenther

Tyler Mattison

Jack Little
More Jason Foley News
Sean Guenther

DET Relief Pitcher #73
Player Stats

Link copied to clipboard!

Tigers recalled LHP Sean Guenther from Triple-A Toledo; placed him on the 60-day injured list.

Guenther underwent season-ending hip surgery last week. The procedural move frees up a spot on Detroit’s 40-man roster.

Transaction

More Sean Guenther News
Sean Guenther

DET Relief Pitcher #73
Player Stats

Link copied to clipboard!

Tigers optioned LHP Sean Guenther to Triple-A Toledo.

The Tigers needed to free up a spot on their active roster for the return of Matt Vierling on Friday night and unfortunately Guenther was the odd man out this time around. The 29-year-old southpaw has registered a 5.23 ERA, 1.45 WHIP and an 8/5 K/BB ratio over 10 1/3 innings at the big league level this season. He’ll almost assuredly get another opportunity with the Tigers before the summer is through.

Transaction

More Sean Guenther News
Keider Montero

DET Starting Pitcher #54
Player Stats

Link copied to clipboard!
The Tigers will have Sean Guenther open ahead of Keider Montero in Monday’s game against the Cardinals.

Montero also pitched behind an opener last time through when he gave up three runs in 3 1/3 innings against the Red Sox. He has a 4.68 ERA in 25 innings over five appearances his season.

Source: Chris McCosky
Sean Guenther
More Keider Montero News
Sean Guenther

DET Relief Pitcher #73
Player Stats

Link copied to clipboard!

Tigers recalled LHP Sean Guenther from Triple-A Toledo.

Guenther is up to replace Bailey Horn, with Horn optioned to Toledo after Wednesday’s game. Guenther will be a middle-inning option in this stint with the Tigers.

Transaction

More Sean Guenther News
Jace Jung

DET 3rd Baseman #17
Player Stats

Link copied to clipboard!
Tigers optioned INF Jace Jung and RHP Sean Guenther to Triple-A Toledo.

Jung will begin the 2025 season in Toledo, but he’s one of the top hitting prospects in the Detroit system, so there’s a great chance he finishes the campaign in the majors. That being said, fantasy managers can wait for Jung to get that promotion rather than stashing him on the bench to begin the year.

Transaction
Sean Guenther
More Jace Jung News
Sean Guenther

DET Relief Pitcher #73
Player Stats

Link copied to clipboard!
Tigers recalled LHP Sean Guenther from Triple-A Toledo.

With Alex Faedo on the Paternity List, Guenther will be called up to give the Tigers a fresh arm in the bullpen. The 28-year-old has allowed one run in 1/13 innings with the Tigers this season and has a 3.31 ERA in 51 2/3 innings at Triple-A.

Transaction
Alex Faedo
More Sean Guenther News
Alex Faedo

DET Relief Pitcher #49
Player Stats

Link copied to clipboard!
Tigers placed RHP Alex Faedo on the Paternity List.

Congrats to Faedo and his growing family. The right-hander will miss the next three games, but he also threw 35 pitches out of the bullpen on Tuesday and may not have pitched during those games regardless. Sean Guenther was called up from Triple-A Toledo in a corresponding move.

Transaction
Sean Guenther
More Alex Faedo News

MLB Highlights

SNB heads to San Diego for Astros vs. Padres

August 4, 2026 09:55 AM

Sunday Night Baseball heads to San Diego for an interleague clash between the Houston Astros and Padres, with Yordan Alvarez and Fernando Tatis Jr. among the stars set to clash on NBC and Peacock at 8pm ET.

Up Next