A leadoff man, Dernier set a Phillies rookie record in 1982 with 42 stolen bases. But he showed little progress as a hitter, batted .231 in 1983, and tried unsuccessfully to learn to switch-hit. Traded to Chicago with Gary Matthews in 1984, he became the first Cubs outfielder to win a Gold Glove; a far-ranging centerfielder, he compensated for slow teammates Matthews in left and Keith Moreland in right. His 45 stolen bases in ’84 were the most by a Cub in 77 years. Slowed by injuries in 1985-86, he eventually lost his job to Dave Martinez, and re-signed with the Phillies as a free agent for 1988.