Beyond the Boxscore lists the ten worst players in baseball history:

9. Ed Romero IF (.247/.298/.302 avg.WAR -4.33, in 2111 PA):

Romero was a utility infielder primarily for the Brewers and Red Sox. He only hit 8 home runs and stole 9 bases, while being caught 10 times, in his 12-year major league career. Romero’s 30 PA, as a 19 year-old in 1977, may have been his best season (0.3 avg. WAR), which is sad. His career OPS+ was 67.

I remember a couple of times when Romero batted leadoff when Wade Boggs was out. It was as if John McNamara was more interested in holding his lineup steady than putting a decent leadoff hitter in the slot.