Second base – Ted Sizemore (1978)
Sizemore was NL Rookie of the Year in 1969, but near the end of his career in 1978, Sizemore had his worst offensive season. Never a big threat with the bat, Sizemore was extremely ineffective that season, hitting just .219 with 12 doubles and no home runs in 351 at-bats. This translated into a woeful .254 slugging percentage and .523 OPS.
Shortstop – Steve Jeltz (1988)
Although Jeltz once hit a home run from each side of the plate in a game, he was mostly an offensive liability. In fact, he had a few of the worst seasons by a Phillies shortstop and tops the list with the worst. In 1988, Jeltz hit just .187 with a .237 slugging percentage. In 379 at-bats, Jeltz has only 15 extra base hits, with no home runs and 27 RBI.