Mariners' James Paxton to undergo Tommy John surgery, will miss entire 2021 season | CBS Sports Headlines Mariners' James Paxton to undergo Tommy John surgery, will miss entire 2021 season Paxton left his first 2021 start after just 21 pitches while in obvious pain ESN FeedsThis post was originally published … Continue reading Mariners' James Paxton to undergo Tommy John surgery, will miss entire 2021 season