トニー・グウィン
On June 16, 2014, Altherr was recalled to Philadelphia to replace outfielder Tony Gwynn, Jr., who was placed on the bereavement list following the death of his father, Tony Gwynn. He made his major league debut that night, appearing as a pinch-hitter in the 12th inning against the Atlanta Braves. He flied out to center field, and was replaced by pitcher Antonio Bastardo in the lineup. He was optioned back to Reading on June 19.