Crystal *may* tie Lydia for most challenge losses ever in a single season, and could beat her, if they stick an extra reward challenge in there. Unfortunately she won't be able to beat the worst winning percentage of all time in challenges, belonging to Mookie, with a 1 win, 17 losses record.

The worst of the worst: (min of 17 lost challenges)

Lydia - 20 losses (4 wins)
Vecepia - 19 losses (4 wins)
Tina - 19 losses (5 wins) *Australia*
Earl - 18 losses (6 wins)
Stephenie - 18 losses (6 wins) *Guatemala*
Sandra - 18 losses (7 wins)
Keith - 18 losses (6 wins)
Mookie - 17 losses (1 win)
Danielle D. - 17 losses (8 wins)
Jenna L. - 17 losses (7 wins) *All Stars*
Sean R. - 17 losses (4 wins)
Rich - 17 losses (6 wins) *Borneo*
Rudy - 17 losses (6 wins) *Borneo*
Susan - 17 losses (5 wins) *Borneo*
Elisabeth - 17 losses (6 wins)

Crystal currently is 16 losses, with 2 wins.