LeBron James, the Los Angeles Lakers forward in his 22nd NBA season, still knows how to throw down a poster. He dunked on Dallas Mavericks center Dereck Lively II early in the first quarter of their matchup Tuesday.

LeBron James turned 40 years old in December, but the Lakers star has not shown many signs of slowing down. In the first four minutes of Los Angeles' game against the Dallas Mavericks on Tuesday night,

LeBron James continues to amaze at 40 years old. Debate remains on exactly where James lands on the list of basketball's of all-time greats. But there's zero debate about his sustained excellence. Nobody in the history of the NBA has maintained his level of play over the course of 22 seasons into his 40s.

Dallas guard Kyrie Irving is expected to miss one to two weeks with a bulging disk in his back, and Mavericks coach Jason Kidd said a timeline for his return was not immediately known.

Dallas Mavericks star Kyrie Irving has a bulging disc in his back and is expected to miss at least 1 to 2 weeks, sources tell me and @espn_macmahon. There is optimism that treatment over the coming days will provide a return to play target date.