Career
He has been a referee in Major League Soccer since 2004. His first match in the Master of Library Science was a game between Dallas Burn and Kansas City Wizards in July 2004. On July 31, 2013, he was the first referee to try out the "Ref Cam" in a friendly game between Associate of Science In 2013 Grajeda was the referee in the National Collegiate Athletic Association College cup.
The match was decided under controversy, involving Grajeda missing several important calls.
One missed call including a goal line hand ball and penalty kick. Late in the Second half, Grajeda again missed another hand ball inside penalty area, costing Maryland an opportunity to equalize.
Updated to matches played on November 3, 2014.