On Monday, the Padres put Myers on the disabled list with wrist tendonitis. Thursday's surgery will be to remove a bone spur from his left wrist. Myers also missed a month earlier in the season with the same injury. He rejoined the team last Thursday, but played in just three games before landing back on the disabled list.
Myers went 2-for-14 with six strikeouts and no extra-base hits in his return from the injury, playing first base and centerfield.
This season, Myers is batting .277 and is second on the team with a .459 slugging percentage.