Charles Robbins Mertz Jr. (born December 4, 1996) is an American soccer player who plays as a midfielder for USL Championship club Pittsburgh Riverhounds SC.
College and amateur
Mertz played four years of college soccer at the University of Michigan between 2015 and 2018.
Mertz also played with Premier Development League sides Chicago FC United and Burlingame Dragons.
On January 14, 2019, Mertz was selected 76th overall in the 2019 MLS SuperDraft by Colorado Rapids. However, he was released by the club during their pre-season.
Mertz signed his first professional deal with USL Championship club Pittsburgh Riverhounds on March 29, 2019.