"In San Francisco's 90 losses in 2008, the Giants bullpen failed its primary responsibility 50 times. The bullpen entered the game with a lead or less than a four run deficit 50 TIMES and either surrendered it or let the game get out of hand.
In San Francisco's 72 wins, the bullpen surrendered the lead three times only to have the Giants recover in time to win the game.
So, in 2008, the San Francisco Giants bullpen was a relevant vulnerability in 53 of 158 games (the starters threw four complete games). Ugh. That's a pretty gnarly problem."