Glasnow signed a one-year, $4 million deal with the Rays on Friday to avoid arbitration, Bob Nightengale of USA Today reports.
The 27-year-old is now officially under contract for 2021 after posting a 4.08 ERA, 1.13 WHIP and 91:22 K:BB over 57.1 innings last season. Glasnow is Tampa Bay's clear ace entering spring training following the departure of Blake Snell.