Luka Doncic celebrated his new contract extension with the Los Angeles Lakers by attending a Backstreet Boys concert.

Luka Dončić signed a three-year, $165 million extension with the Los Angeles Lakers on Saturday that includes a player option in the final year of the pact.

The decision comes after the Lakers pulled off arguably one of the biggest trades in the history of professional sports this past season, a three-team deal centered around injury-riddled veteran ...