Stillman, sometimes locally called "Mr. HV", played as a defender when active, until suffering from a shoulder injury, which he received during a training match against IF Troja-Ljungby in 2000, made it impossible for him to continue his active playing career.
Stillman, som ibland lokalt kallas Mr. HV, spelade som back tills en axelskada, som han ådrog sig i en träningsmatch mot IF Troja-Ljungby 2000, gjorde det omöjligt för honom att fortsätta sin aktiva spelarkarriär.