At the same time, the SEC organized competition for some sports into two divisions. The Western Division comprised six of the seven member schools in the Central Time Zone, while the Eastern Division comprised the five member schools in the Eastern Time Zone plus Vanderbilt, which is in the Central Time Zone but was placed in the Eastern Division to preserve its rivalry with Tennessee. Initially, the divisional format was used in football, baseball, and men's basketball. The divisional format was dropped for men's basketball following the 2011–2012 season.