The NBA had already convened a panel of experts to study Achilles tendon injuries even before Indiana star Tyrese Haliburton ruptured his in Game 7 of the NBA Finals, Commissioner Adam Silver said Wednesday night. The league had seven known Achilles injuries this season – Pacers forwards James Wiseman and Isaiah Jackson, New Orleans guard Dejounte Murray and Miami guard Dru Smith had them in the regular season, and Boston’s Jayson Tatum, Milwaukee’s Damian Lillard and Haliburton were hurt in the playoffs. Silver, speaking to ESPN as part of its NBA draft coverage, said there weren’t any in the NBA in the previous season. “We had already convened a panel of experts before Tyrese’s most recent Achilles rupture,” Silver said on the telecast. “We had seven this year. We had zero last year under the exact same circumstances. The most we’ve ever had in a season is four.”