Phillips's time previous to at the Major League level had been limited to defensive replacement and late season call-up. In 2006, Phillips started the year as the primary backup at first base, behind Jason Giambi. This changed, however, when Gary Sheffield went on the disabled list. Primary designated hitter Bernie Williams took over the starting right field job, leaving the DH spot open. With Giambi's bad knees and his sub-par defense in the field, he became the primary DH. Phillips took over at first base and played well. This proved manager Joe Torre correct when he said all that Phillips needed was more at bats. He led the team with a .333 batting average in June and continued with his .333 average for the first 22 games of July. His average on July 26 was .300, with 30 hits in 100 at bats. Earlier, his light hitting triggered GM Brian Cashman to go out and trade for Craig Wilson of the Pittsburgh Pirates. Phillips was kept on the roster mostly because of his versatility to play second base or third base. Also, he could play first if Wilson was forced to play the outfield or catch.