Against the Seattle Mariners on July 18, 2014, Navarro came in to pinch-hit for John McDonald in the bottom of the 16th inning. He ripped the first pitch through to centerfield, driving in the winning run represented by Mike Trout who was on second base after hitting his 100th career double. It was Navarro's first career walk-off RBI and the first pinch-hit walk-off by an Angel since Sept. 7, 2012. It was just the second pinch-hit walk-off in the 16th inning or later in Angels franchise history.  Efren Hit his first career homerun off Justin Verlander on July 26.