Kerr played in nearly 100 competitive matches for St Mirren, his local professional club.
His career was stunted by a serious knee injury suffered in 1999, when opponent Ross Tokely committed an "overzealous tackle" on Kerr.
[1] Tokely's challenge caused damage to his cruciate ligament and forced Kerr out of the game for nearly 18 months.
[1] After this incident, St Mirren fans repeatedly barracked Tokely during matches.
This biographical article related to association football in Scotland, about a defender born in the 1970s, is a stub.