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Isaac Mattson
#72
RP
Seattle Mariners
0
W
0
L
5.35
ERA
36
K
18
BB
Summary
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Latest News
Mariners Bet on Isaac Mattson's Bounce-Back Potential With Pirates Waiver Claim
Seattle Mariners On SI
2026-11-04T14:35:00Z
Mariners claim RHP Isaac Mattson, OF Grant McCray ahead of free agency opening
SB Nation
2026-11-02T21:05:16Z
Mariners Claim Isaac Mattson off Waivers From Pirates
Pittsburgh Baseball Now
2026-11-02T20:27:47Z
Pirates place right-hander Isaac Mattson on injured list, recall lefty Brandon Eisert
Associated Press
2026-09-08T23:08:08Z
Pirates Place Relief Pitcher on Injured List Before White Sox Game
Pittsburgh Pirates On SI
2026-09-08T22:45:23Z
Pirates Change Bullpen After 8-5 Loss to Tigers: Mattson Optioned, Kelly Recalled
Athlon Sports
2026-08-18T18:56:02Z
Isaac Mattson Will Be Different Pitcher for Pirates This Time Around
Pittsburgh Baseball Now
2026-06-16T12:00:00Z
Pirates' Isaac Mattson Hopes to Follow All-Star's Footsteps
Roundtable Sports
2026-06-14T12:00:31Z
Opening Day Will Be Extra Special for Many Pirates Players
1:24
Roundtable Sports
2026-03-25T15:00:22Z
Isaac Mattson Wants to Continue Underdog Story With Pittsburgh Pirates
1:09
Roundtable Sports
2026-01-27T16:00:01Z
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Mariners Claim Mattson
Mariners Bet on Isaac Mattson's Bounce-Back Potential With Pirates Waiver Claim
Isaac Mattson gets a fresh start with the Mariners after a rough 2026. Seattle's latest bullpen bet has upside, but trust must be earned.
Tremayne Person
Isaac
Mattson
Isaac Mattson
RP - SEA - #72
2026 season
38.2
IP
0
SV
5.35
ERA
36
K
18
BB
Mariners Roster Moves
Mariners claim RHP Isaac Mattson, OF Grant McCray ahead of free agency opening
Welcome to roster churn.
John Trupin
Mattson Hits Injured List
Pirates Place Relief Pitcher on Injured List Before White Sox Game
The Pittsburgh Pirates lost one of their bullpen arm to start their Chicago trip.
Dominic Campbell
Pirates' Bullpen Shakeup
Pirates Change Bullpen After 8-5 Loss to Tigers: Mattson Optioned, Kelly Recalled
Pirates reshuffle their bullpen after Monday’s loss to Detroit.
Miracle Dimwesh
Mattson's New Arsenal
Isaac Mattson Will Be Different Pitcher for Pirates This Time Around
Isaac Mattson had a breakout season for the Pirates in 2025, and he did so while relying primarily on one […] The post Isaac Mattson Will Be Different Pitcher for Pirates This Time Around appeared first on Pittsburgh Baseball Now.
Danny Demilio
Mariners Bet on Isaac Mattson's Bounce-Back Potential With Pirates Waiver Claim
Isaac Mattson gets a fresh start with the Mariners after a rough 2026. Seattle's latest bullpen bet has upside, but trust must be earned.
Tremayne Person
1:24
Opening Day Will Be Extra Special for Many Pirates Players
Nine Pittsburgh Pirates will take part in their first major-league opener.
1:24
Roundtable Sports
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