Tampa Bay reinstated Williamson (hamstring) from the 10-day injured list Sunday.
Williamson has missed over a month of action since being shelved Aug. 7. Before being sidelined, the 25-year-old slashed .247/.309/.332 with three homers, 26 RBI and eight stolen bases. The Rays designated Jake Fraley for assignment to make room for WIlliamson to rejoin the club.