Cubs placed RHP Phil Maton on the 15-day injured list with right knee tendinitis.
This opens up a roster spot for the newly acquired David Peterson. For Maton, it’s the same problem that had him shelved for much of April. Maton gave up single runs in his last two appearances to raise his ERA to 6.08. He was a candidate for save chances with Daniel Palencia out, so this makes Jacob Webb a little better of a bet for the short term.