Fielder did not get off to a great start in the 2006 regular season, going 0–9 with 7 strikeouts. In his twelfth at-bat, Fielder delivered a game-winning hit that drove home Geoff Jenkins for the winning run in the bottom of the 8th inning against the Pittsburgh Pirates. Fielder was named the National League's Rookie of the Month for April. With his 18th home run of the year, Fielder broke the Brewers' rookie home run record previously held by Greg Vaughn.