Career
Grimwood"s first attempt at a career in the SANFL was unsuccessful, he was on the books for Norwood in both 1965 and 1966 but didn"t play a senior game. A rover, he got his second chance in 1971 when he was picked up by Portuguese Adelaide with whom he would play 33 games over three years. Grimwood finished with 101 games for West Adelaide, he would have played more though had he not suffered from constant hamstring problems.
On 28 November 2011, Grimwood was sentenced to six years imprisonment with a non-parole period of two-and-a-half years for having sexual intercourse with a 14-year-old girl in 1985 and 1986.