Warren began playing tennis at 12 years old. He played #1 singles at Willowbrook High School and was a varsity letterman for 3 years. He then competed at the University of St.Francis-Joliet, playing #1 singles and doubles all four years. He was a NAIA National Qualifier in 2001 and 2002, and was ranked number 10 in the 2003 USTA Men’s Open ranking for Chicago. Warren has been teaching tennis at Courts Plus since 1998. He is a USPTR Certified Tennis Instructor and is the director of the Chicago Gateway Jr. Grand Prix tennis circuit. Warren enjoys teaching tennis because it is a sport that individuals can participate in at any age or level.