The Brewers recalled Jay from Triple-A Nashville on Saturday.
Milwaukee swooped in and traded for Jay shortly after the left-hander was designated for assignment by the Mets on July 17. With southpaw Bryan Hudson (oblique) heading to the injured list, Jay will join the 26-man roster. The 30-year-old surrendered four runs in 4.2 innings with the Mets but was much more effective at Triple-A for New York, holding a 2.40 ERA in 41.1 innings.