Robert Clayton Groff[1] (born January 31, 1966, in Mission Hills, California), is a former driver in the Indy Racing League and CART Championship Car series and is brother of Mike Groff.
He raced in the 1994 CART season and 1997-1998 IRL seasons with 9 combined starts.
His best career finish was in his first race, a ninth place at the 1997 Indianapolis 500.
(key) (Races in bold indicate pole position)
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