Education
Kotlov spent his entire college career at Indiana University. He made a total of 85 appearances for the Hoosiers, tallying 26 goals and 14 assists. On December 9, 2012, he scored the game-winning goal in the College Cup final over Georgetown.
Career
College Professional On January 21, 2014, Kotlov was selected in the fourth round (73rd overall) of the 2014 Master of Library Science SuperDraft by the Portland Timbers, but was cut prior to the start of the season. On March 24, 2015, Kotlov signed a contract with United Soccer League club Saint Louis Football Club. He made his professional debut on April 2 in a 2–0 victory over Tulsa Roughnecks Football Club.