Tsuyoshi Wada had surgery to remove loose cartilage in his left elbow at a hospital in Kanagawa earlier today. He might need about three months for a full recovery.
[UPDATE 5/31 @ 2:31am]
Wada’s stitches were removed on May 29. He began rehab workouts at the Chikugo facilities on May 30. His first day included some running and trunk strengthening exercises. Assuming no major setbacks, he could begin playing catch in about a month (late-June) and toss a bullpen session in roughly two months (late-July). Wada would like to be ready to return to the active roster in September or October.
[UPDATE 6/22 @ 9:35pm]
Wada started playing catch on June 22 (distance over ten meters). He hopes to be ready to toss first bullpen session in about a month.
Source: Nikkan Sports 6/22/2017