impingement

At the start of the season, Sasaki made eight underwhelming starts — with wild command and declining fastball velocity contributing to a 4.72 ERA — before being sidelined by a shoulder impingement.

He has not pitched in nearly three months after going on the IL with a shoulder impingement.

“The stuff was good,” Roberts said of Kopech, out since the start of the year because of a shoulder impingement.

If Roberts’ story was accurate, and Sasaki experienced a shoulder impingement similar to the one that slowed him down last year in Japan, wouldn’t that point to a chronic problem?

The Dodgers soon after announced Sasaki was placed on the injured list after he was diagnosed with right shoulder impingement.