He was a strong overhead mark and reliable kick on both sides of his body, He knew how to play his position and was considered by many as the hardest on the field.
Recruited from local football nursery St Joseph's, Stoneham had a very good career, playing 241 matches from 1986 to 2000 and captaining the club in 1996 (co-captain with Gary Ablett) and 1997–1998.
He was arguably at the peak of his powers from 1989 to 1992 as a mobile centre-half forward and relief ruckman, playing several State games in this period, winning the Geelong best and fairest in 1990 and All-Australian selection in 1992.
Off the field, Stoneham made forays into the food industry, in 1993 operating the short-lived Kebazza's on Shannon Avenue, Geelong West, a stall that served kebabs and Middle Eastern cuisine, and going into business with Billy Brownless in 1994 with Geelong CBD cafe/restaurant Players on Malop.
In 2020 he was named in the St Joseph's College team of champions, recognising the best VFL/AFL players to have attended the school.