San Diego Padres
2005: The worst division winner ever
In 2005, the Western Division Champion Padres finished with the lowest-ever winning percentage for a division champion (or for that matter, a postseason qualifier) in a non-strike season, 82–80. Three teams in the Eastern Division finished with better records than San Diego but failed to qualify for the playoffs, including second-place Philadelphia, which won 88 games and all six of its contests with the Padres. There had been some speculation that the Padres would be the first team in history to win a division and finish below .500, but their victory over the Los Angeles Dodgers on September 30 gave them their 81st victory. In the 2005 NLDS, the reigning National League champion St. Louis Cardinals, who finished the season with the majors' best record, swept the Padres in three consecutive games. Thus the Padres finished the season with an overall regular-and-post-season record of 82–83, the first post-season qualifier in a normal-length season to lose more games than it won overall.
The 2005 Padres featured bright spots, however, including ace pitcher Jake Peavy, the NL strikeout leader, and closer Trevor Hoffman, who claimed his 400th save.By WIKI