Manager Dave Roberts said Hernandez was able to swing in the batting cage on Saturday and would return to the lineup "in the next couple of days."
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Guerrero, who missed a week earlier in the spring with a left knee sprain, hasn't played since March 20 after aggravating the knee and Roberts said starting the season on the disabled list is a possibility. There was no indication how long Guerrero will be out. He has played only nine of the Dodgers' 26 games through Saturday.
Roberts also said Seager, rehabbing from a sprained left knee, hit, ran and played defense in a Minor League game on Saturday.
Ken Gurnick is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.