McCullers (elbow) will make his Grapefruit League debut Thursday against the Cardinals, Jake Kaplan of the Houston Chronicle reports.
McCullers is expected to throw two innings in what will be his first real game action since last August. His pitch count will be in the 40 to 45 range, so the right-hander could throw more innings if he's efficient. During a simulated game Saturday, McCullers was able to ramp up his fastball to 93 to 95 mph.