The San Antonio Spurs’ Frost Bank Center — formerly the AT&T Center — has the bad luck of being the most injury-prone arena in the NBA, according to a new study published by sports-gambling website Betting.com. The Frost Bank Center averaged 2.6 injuries per game over the past decade, according to the analysis. To determine the NBA’s most “cursed” courts, Betting.com compiled data from NBA databases, analyzing 25,000 injuries since 2010.