After the Pirates took a 1-0 lead on Josh Bell's double to left field, Bell moved to third base on a single by Francisco Cervelli. John Jaso then tried to check his swing but tapped an R.A. Dickey knuckleball into play just in front of the plate. Catcher Kurt Suzuki fielded the ball as Bell barreled toward home plate.
Lentz ruled that Bell veered out of the baseline to avoid Suzuki and called him out. According to MLB Rule 7.08, a baserunner is out when he "runs more than three feet away from his base path to avoid being tagged unless his action is to avoid interference with a fielder fielding a batted ball.