1. Paul Jewell
Club: Derby County
Win percentage: 0%
Statistically the worst-ever Premier League manager is Paul Jewell. In 24 games as boss of Derby County during the 2007-08 season, he didn’t manage to win a single game and gained just five points, meaning the Rams were relegated with a final tally of 11 (the other six being won by Billy Davies prior to Jewell’s appointment).
It turns out signing Robbie Savage and Roy Carroll doesn’t keep you up, and the former Bradford City striker was sacked the following season with Derby sitting 18th in the Championship.