After being helped to his feet, Rackley was able to leave under his own power. On his way out, he handed a young fan a baseball as it was clear Rackley's day behind the plate was done.
Rackley, who has been umpiring in the Majors since August 2010, was replaced by second-base umpire Alfonso Marquez as a three-man crew was utilized. There was a delay of 15 minutes between pitches.
Rackley will be evaluated before the crew's next assignment on Tuesday.
Jay Paris is a contributor to MLB.com based in San Diego. This story was not subject to the approval of Major League Baseball or its clubs.