Jean Segura finished 3-for-4 with two RBI as the Brewers beat the Cardinals 6-4 on Saturday night.
Marco Estrada yielded four earned runs in 5 2/3 innings Saturday in a no-decision against the Cardinals.
Wily Peralta was knocked around for seven runs (six earned) over five innings Friday in a loss to the Cardinals.
Aramis Ramirez connected for a pair of three-run homers in Friday's loss to the Cardinals.
Hiram Burgos lost to the Pirates after allowing three runs in five innings on Thursday.
Brewers purchased the contract of RHP Francisco Rodriguez from Triple-A Nashville.
Yovani Gallardo allowed just three hits and two runs over six innings Wednesday, but two of his four walks came back to bite him in a loss to the Pirates.
Rickie Weeks launched a solo homer in Wednesday's loss to the Pirates.
Brewers transferred INF Taylor Green from the 15-day disabled list to the 60-day disabled list.
Brewers optioned C/INF Blake Lalli to Triple-A Nashville.
Chris Narveson (finger) threw a bullpen session over the weekend in Cincinnati and is scheduled for another one while the Brewers are in Pittsburgh.
Corey Hart (knee) is unlikely to return from the disabled list on May 30 when first eligible.
CBS Sports' Jon Heyman reports that the Brewers are calling up reliever Francisco Rodriguez.
Ryan Braun went 3-for-6 with two doubles as the Brewers lost to the Pirates in extra innings on Tuesday.
Kyle Lohse allowed two runs over 5 2/3 innings of a no-decision against the Pirates on Tuesday.