Butler (3-7, 4.82 ERA) was bitten by the longball on Wednesday. He gave up a lead-off home run to Dexter Fowler in the first inning, and then allowed a two-run shot to Anthony Rizzo in the third to account for all the scoring the Cubs would have on the afternoon.
The youngster has made two starts since coming back from the minor leagues. He has given up six earned runs over 11 innings in those outings. He has yet to more than six innings any start of his young career.
The announcement confirms an earlier report.
Holland, who has been out since April with a shoulder injury, is scheduled to make three minor league starts before returning to the Texas rotation.
Heathcott is currently on the 60-day disabled list with an injured quad.
A MRI revealed that
Though the bone spur isn't exactly good news, there is still hope that Banuelos could pitch for Atlanta this season.
The save was Rondon's first since June 20, as the Cubs have been mixing and matching at the back end of the bullpen for the last month or so. Still, Rondon has been scored upon just once in his last 19 outings, and his ERA is down to 1.80 for the season.