Delbert Bernard Unser (born December 9, 1944 in Decatur, Illinois) is a retired Major League Baseball center fielder and utility player who had a 15-year career from 1968 to 1982. Unser played for the Washington Senators from 1968 to 1971 and the Cleveland Indians in 1972. He also played for the Philadelphia Phillies from 1973 to 1974, the New York Mets from 1975 to 1976, the Montreal Expos from 1976 to 1978, and again for the Phillies from 1979 to 1982. In 1977 he began to be used primarily as a pinch-hitter, and also split his time on the field between the outfield and first base.
Unser led the American League in triples in 1969 with eight. He had one 5-hit game, in which he hit four singles and a home run against the Oakland Athletics on August 20, 1968. Unser's career totals include 1,799 games played, 1,334 hits, 87 home runs, 481 Runs batted in, and a lifetime batting average of .258. Unser, along with Lee Lacy, is one of two players to hit three pinch-hit home runs in consecutive at-bats.
His father was MLB catcher Al Unser.