MLB's Most Bandwagon Fans: Who Jumps Ship When Teams Struggle?

A recent study by Casino Guru USA examined the average attendance for every MLB team from 2000 to 2026, comparing it to ballpark capacity and factoring in losing seasons to determine which fanbases are the most bandwagon.

The study found that Philadelphia Phillies fans rank #1 most bandwagon in the MLB with a score of 84/100. Fans of the Milwaukee Brewers rank second with a score of 81/100. Boston Red Sox fans rank as the #1 least bandwagon of all and earn the lowest score of 42/100. Fans of the Washington Nationals recorded the largest dip in attendance in a losing season immediately following a winning season, at 26%.

San Diego Padres fans scored 80/100. Chicago Cubs fans scored 76/100. Athletics fans rank fifth, scoring 66/100. Toronto Blue Jays fans scored 43/100. Miami Marlins fans scored 44/100. Tampa Bay Rays fans scored 46/100. Arizona Diamondbacks fans scored 48/100.