Dallas Mavericks rookie Cooper Flagg described his NBA Summer League debut as "one of the worst games of my life," but drew praise from coaches and opposing guard Bronny James after a win over the Los Angeles Lakers.

The California Classic featured the Miami Heat, Los Angeles Lakers, San Antonio Spurs and the Golden State Warriors while the Salt Lake City League featured the Memphis Grizzlies, Oklahoma City Thunder, Philadelphia 76ers and Utah Jazz. Here are some of the best moments from the start of Summer League action.

Former Cal center Mady Sissoko did some good things for the Oklahoma City Thunder in his final Salt Lake City Summer League game on Tuesday, and he continued to be a factor on the boards.. Sissoko was a starter in all three games in Salt Lake City,

Sixers rookie guard VJ Edgecombe has been diagnosed with a left thumb sprain and will miss Thursday night's Summer League game.

VJ Edgecombe #77 of the Philadelphia 76ers slam dunks the ball over Kyle Filipowski #22 of the Utah Jazz during the second half of their NBA Summer League game at the Jon M. Huntsman Center on July 5,

After a disappointing debut, Ace Bailey redeemed himself in his second Summer League game, with a little bit of support from his new head coach, Will Hardy.