Nolin, No. 8 among the A's Top 20 Prospects, according to MLB.com, threw from flat ground Sunday, the first step in returning to the mound. It's unlikely he'll be able to appear in any Cactus League games, keeping him out of a crowded competition for one of three open rotation spots.
Expect the 25-year-old lefty, acquired in the Josh Donaldson deal, to be waiting on standby in Triple-A Nashville.
Rehabbing right-hander Jarrod Parker could be facing hitters again for the first time since Tommy John surgery as soon as Friday, should all go well with his Tuesday bullpen session.
Jane Lee is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.