|Date of birth||May 5, 1972|
|Place of birth||Naperville, Illinois, United States|
|Height||5 ft 11 in (1.80 m)|
|1996–1997||Milwaukee Wave (indoor)||9||(0)|
|1998–||Fremd High School|
|* Senior club appearances and goals counted for the domestic league only.
In 1990, Keller, older brother of national team player Debbie Keller, graduated from Waubonsie Valley High School where he was a 1989 All Conference basketball player, a 1988 and 1989 All State soccer player and a 1989 All Midwest soccer player. He is a member of the WVHS Hall of Fame. He attended Indiana University, playing on the men’s soccer team from 1991 to 1994. In 1994, Keller and his team mates fell to the Virginia Cavaliers in the final of the NCAA Division I Men's Soccer Championship.
In 1995, Keller turned professional with the Rockford Raptors of the USISL. In February 1996, the Dallas Burn selected Keller in the fourteenth round (133rd overall) of the 1996 MLS Inaugural Player Draft. The Burn released him during the pre-season and Keller returned to the Raptors for the 1996 season. In October 1996, he signed as a free agent with the Milwaukee Wave of the National Professional Soccer League. In 1998, he became the head coach of the Fremd High School boys' team.