Cubs avoided arbitration with RHP Pedro Strop by agreeing to a one-year $1.325 million contract.
Cubs pitching coach Chris Bosio suggested Pedro Strop and Hector Rondon could compete for the closer's job.
Cubs team president Theo Epstein indicated over the weekend that they have "guys that could close" already on the roster, likely referring to Pedro Strop.
Pedro Strop earned his first save of the season Saturday in the Cubs' victory versus the Braves.
Pedro Strop will serve as the Cubs' closer for the remainder of the 2013 regular season.
Cubs manager Dale Sveum said Pedro Strop could be used in save situations this month.
Pedro Strop was charged with five runs in the ninth Monday and took a loss to the Brewers.
Cubs manager Dale Sveum said Saturday that Pedro Strop would be "one of the higher candidates" to close if Kevin Gregg is traded.
Pedro Strop struck out the side in the eighth Friday against the Cardinals and is still unscored upon as a Cub.
Cubs acquired RHP Pedro Strop from the Orioles in the Scott Feldman trade.
Orioles activated RHP Pedro Strop from the 15-day disabled list.
Pedro Strop (back) is expected to be activated from the disabled list on Saturday.
Pedro Strop (back) threw 25 pitches in a simulated inning on Thursday.
Pedro Strop (back) is aiming to return from the disabled list this coming weekend.