Attended Islip High School in New York where Mayer was named All-Suffolk County in three sports (Soccer, Basketball, and Tennis).
After graduating from Islip High School, Mayer attended James Madison University (JMU) where he played collegiate soccer and tennis for four seasons.
In the 1974 off-season, while playing in England for Southend United, then in the Football League Third Division, Mayer earned the distinction of scoring a goal from the goalkeeper position.
While the Sockers had been a poor outdoor team, they quickly became the dominant U.S. indoor franchise, winning the MISL 1982-1983 championship.
After the Americans' franchise folded the following summer, Mayer signed with the Kansas City Comets for the 1985–86 season and became an MISL All-Star for the second time.
Mayer played his last game on April 12, 1989, against the Wichita Wings, and he finished with a regular-season won-lost record of 56–56 in Kansas City.
[4] After retiring from playing, Mayer was an assistant coach to the Kansas City Wizards of Major League Soccer.
The team honored Mayer at halftime of their game on February 22, 2013, by retiring his #0 jersey from his tenure with the original Major Indoor Soccer League Kansas City Comets.