The Dodgers released Wahl from his minor-league deal July 31.
The Dodgers released Wahl on Tuesday before re-signing him on a minor-league contract Thursday.
The Dodgers designated Sherfy for assignment Tuesday, Eric Stephen of SBNation.com reports.
Wahl was claimed off waivers by the Dodgers on Wednesday.
Wahl was designated for assignment by the Brewers on Wednesday.
Wahl (oblique) was reinstated from the 60-day injured list and optioned to Triple-A Nashville on Monday.
Wahl (oblique) is scheduled to begin a rehab assignment at Double-A Biloxi on Tuesday.
Wahl (oblique) was transferred to the 60-day injured list Saturday.
Brewers manager Craig Counsell confirmed Tuesday that Wahl (oblique) will open the season on the injured list, Will Sammon of The Athletic reports.