The catcher advanced to third after Yankees right fielder Brennan Boesch was charged with an error for letting Kelly Johnson's ground single go under his glove.
Harewood, who was having one of his best games in a Forest shirt, then rolled a shot agonisingly wide, before Johnson headed narrowly over from a terrific Jim Brennan cross.
Six position players are fighting over four spots in the infield and outfield, with major league vets Brennan Boesch and Ben Francisco likely having the best chance at landing outfield spots, and Jayson Nix and Dan Johnson the best possibilities for infield jobs.