The 2 worst QBs in the NFL are Jake Delhomme and Craig Anderson.
Why are they still starting?
Simple...money.
If the Browns go back to Brady Quinn, odds go up that the Browns would have to pay Quinn a huge bonus at the end of the year (for % of snaps)
In the case of Jake D., blame that one on the idiot GM who gave Delhomme a huge contract after last season.
Honorable mention goes to JaMarcus Russell...only reason I don't include him in the top list is because he plays for a team that sucks.