Nationals' Josiah Gray: Throwing off mound Saturday

Gray (elbow) will throw a bullpen session Saturday, Andrew Golden of The Washington Post reports.

It will be the first time Gray has thrown off a mound since he was diagnosed with a flexor strain nearly a month ago. The right-hander will eventually progress to facing hitters and going out on a rehab assignment, but it could be a couple weeks still before he's ready to return.