I got asked this question the this morning and it sounds so simple but for the life of me I am not certain. HS reentry applies.
Starting pitcher gets severe cramping in his calf while on the mound and could not continue. Umpire grants the new pitcher unlimited time to warm up and subs in a bench player for the pitcher. 1 inning later the starting pitcher reenters into the field. Is this legal? Can a injured player reenter?