Anthony Rizzo went 3-for-4 with a three-run homer and a double as the Cubs beat the Brewers 5-2 on Thursday.
Hector Rondon recorded his second save in two days Thursday with a perfect ninth against the Brewers.
Kris Bryant is not in Thursday's lineup against the Brewers.
ESPN's Jayson Stark reports that the Cubs are "aggressively trying to include Starlin Castro in any deal."
Miguel Montero has a checkup with a hand specialist Thursday in Chicago.
Jon Lester limited the Rockies to two runs over eight innings Wednesday in the Cubs' 3-2 victory.
Hector Rondon notched picked up his 13th save of the season Wednesday afternoon against the Rockies.
Anthony Rizzo cranked a two-run homer in the Cubs' win over the Rockies on Wednesday.
Cubs SS prospect Javier Baez blasted two home runs Tuesday in a win for Triple-A Iowa.
CBS Sports' Jon Heyman reports that the Padres have discussed Javier Baez with the Cubs.
Cubs designated OF Mike Baxter for assignment.
Starlin Castro is not in the Cubs' lineup Wednesday.
Jorge Soler is not in the Cubs' lineup Wednesday.
Kyle Schwarber is making his first major league start in left field Wednesday.
Cubs purchased the contract of RHP Ben Rowen from Triple-A Iowa.