Grace wore his familiar number 17 in Arizona where he played for three more seasons, including helping the Diamondbacks win the 2001 World Series. Having never even visited Yankee Stadium, he belted a home run there in Game 4 of the series. Grace led off the bottom of the 9th inning with a single off Yankee pitcher Mariano Rivera, which rallied the Arizona Diamondbacks to a come-from-behind victory in Game 7. His .515 batting average in League Championship Series play is a record for players in at least ten games.