They hit .183 as a team.
This is interesting. The '96 Yankees hit .216 in their World Series. Bad hitting performances are entirely common. It's a short series.
They're not even the worst winners. The '83 Orioles hit .213 against the Phillies and won (mostly because the Phils hit .195). Oakland hit .209 in 1972, .212 in 1973 and .211 in 1974, and won three straight.
The '96 Yankees at least had an OBP over .300, as the Cardinals do this year. Oakland's was around .300 all three years. The '83 Orioles are the only team with an OBP even within 20 points of Detroit's to win a WS since 1970.