By Michael Donovan

The Phillies today placed pitcher Aaron Nola on the 10-day disabled list with a strain in his lower back.

“Aaron experienced soreness in his lower back during his start on Thursday,” general manager Matt Klentak said. “After receiving treatment over the last few days, the symptoms improved, but he still felt some tightness during his side session yesterday. Our hope and expectation is that this will not be a lengthy DL placement and that Aaron will miss only one or two starts.”

Nola, 23, is 2-0 with a 4.50 ERA in three starts this season. Considered to be one of the Phils’ most promising young arms, he missed time last season with a right elbow injury.