"The MRI came back really positive," Mattingly said. "Stan [Conte, VP medical services] is categorizing it as very mild, feels he's day to day. Yasiel looks good, he's moving around a lot. I have a feeling Yasiel will play in Houston at some point."
Mattingly said he would not use Puig to pinch-hit Wednesday, and with a day off on Thursday, the outfielder will be re-evaluated on Friday when the Dodgers open a series against the Astros. Mattingly said he might use Puig as the designated hitter in Houston if the medical department gives the OK.
"He doesn't feel like it will be a DL," Mattingly said. "Stan feels pretty good about it."
Mattingly said he's confident this hamstring injury is much milder than the one Puig had in the other leg earlier this year. But he also said Puig is showing a tendency toward the same type of injury.
"When you get guys really muscular, big strong guys, sometimes once a leg injury comes, they seem to come back," Mattingly said. "It's something he's going to have to pay attention to throughout his career, do extra work and make sure he's loose."
Ken Gurnick is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.