Neil Ramirez (triceps) expects to be activated from the disabled list when his 15 days are up.
Jake Arrieta shut down the Rockies on Thursday, allowing just one run and three hits over seven innings to improve to 6-2.
Cubs acquired C Victor Caratini from the Braves for LHP James Russell and Emilio Bonifacio.
Cubs placed LHP Felix Doubront on the 15-day disabled list with a calf strain.
Travis Wood went home with a no-decision after allowing four runs in six frames, as the Cubs lost in 10 innings to the Rockies on Wednesday.
Luis Valbuena went 3-for-5 with a game-tying two-run home run in the eighth inning, but the Cubs fell in 10 innings to the Rockies on Wednesday.
Cubs optioned RHP Blake Parker to Triple-A Iowa.
Cubs recalled LHP Chris Rusin from Triple-A Iowa.
Cubs acquired LHP Felix Doubront from the Cubs for a player to be named later or cash considerations.
FOX Sports' Jon Morosi reports that the Cubs have an agreement in place to acquire Felix Doubront from the Red Sox for a player to be named later.
Cubs prospect RHP Pierce Johnson allowed two runs on five hits in six innings Tuesday for Double-A Tennessee, striking out eight batters.
Cubs prospect C/OF Kyle Schwarber went 2-for-4 with a home run, double and two RBI on Tuesday for High-A Daytona.
Cubs prospect 3B Kris Bryant went 2-for-4 with a home run on Tuesday for Triple-A Iowa.
MLB.com's Peter Gammons reports that the Athletics and Giants are "sifting through" potential options at second base, including Luis Valbuena, Asdrubal Cabrera, Aaron Hill, Martin Prado and Gordon Beckham.
Cubs pitching prospect C.J. Edwards (shoulder) is expected to return to Double-A Tennessee this week.