Cavaliers' Donovan Mitchell refutes report suggesting he grew frustrated with teammates

The Cleveland Cavaliers quest for an NBA championship came to an abrupt halt on Wednesday. The Boston Celtics advanced to the Eastern Conference Finals after defeating Cleveland in Game 5 of the second round playoff series.

Shortly after the Cavs playoff exit, a report from Cleveland.com suggested that four-time NBA All-Star Donovan Mitchell "grew frustrated with some teammates' lack of maturity, focus, playoff-level readiness, and a willingness to listen."

The report comes amid rumors...