The Cubs selected Woodford's contract from Triple-A Iowa on Wednesday.
Woodford elected to enter free agency July 17 after being DFA'd by the Cubs six days earlier, but he opted to remain in the organization on a minor-league contract. He's now back with the big club, with the Cubs designating Andrew Wantz for assignment in a corresponding move. Woodford has appeared in 17 games between the Cubs and Brewers this season and has a 7.46 ERA, 1.82 WHIP and 23:7 K:BB across 25.1 innings.