2005 Nippon Professional Baseball season

In 2005 the Nippon Professional Baseball season ended with the Chiba Lotte Marines of the Pacific League defeating the Hanshin Tigers of the Central League in a four-game sweep in the Nippon Series.

Central League

 * Season Format
 * Regular Season
 * Regular Season 1st place is the champion

Pacific League

 * Season Format
 * Regular Season
 * Playoff 1st Stage: Regular Season 2nd place vs. Regular Season 3rd place – Best of 3
 * Playoff 2nd Stage: Regular Season 1st place vs. Playoff 1st Stage winner – Best of 5
 * Playoff 2nd Stage winner is the champion

Japan Series

 * Central League champion vs. Pacific League champion – Best of 7

Playoff 1st Stage
Chiba Lotte Marines (2) vs. Seibu Lions (0)

Playoff 2nd Stage
Fukuoka SoftBank Hawks (2) vs. Chiba Lotte Marines (3)

Best Nine Awards
Central League

Pacific League

Gold Gloves
Central League

Pacific League