After a rocky outing Friday night that saw Hendricks last just 4.1 innings and surrender 5 runs on 6 hits, the 29-year-old right-hander was placed on the 10-day injured list.
Hendricks is said to be dealing with right shoulder inflammation, which could explain his recent rough go.
In 14 starts this season, Hendricks has recorded a 3.36 ERA with 75 strikeouts across 88.1 innings pitched. He has a 1.14 WHIP to go with his 7-5 record. This is a big blow to the Cubs' rotation, as Hendricks had been its most reliable option among the team's starting pitchers.
In a corresponding move, the Cubs have promoted RHP Rowan Wick from Triple-A Iowa.
Wick appeared in 19 games in relief at Triple-A, logging a 2.30 ERA with 33 strikeouts in 27.1 innings. He's recorded three saves on the year and boasts a 1.09 WHIP.
It's unclear how long Hendricks will be sidelined with the shoulder injury, but Cubs fans are hopeful that he'll be back in the rotation before long.