Paxton (hamstring) did some throwing from his knees Sunday, Ian Browne of MLB.com reports.

EDGE Analysis

Paxton's Grade 1 right hamstring strain is keeping him from normal workouts, but he's doing his best to keep his arm in shape in the meantime. The left-hander is not expected to be ready in time for Opening Day. Paxton, of course, has had a terrible time staying healthy, having made just six major-league starts and one rehab start over the last three years due to injury.