Thursday night's loss was particularly frustrating for the Mavericks, as a late-game defensive breakdown between guard Quentin Grimes and star Luka Doncic led to an easy go-ahead basket for John Collins. CLARKSON TO COLLINS FOR THE LEAD 🤯 Jazz up 2... 6.4 seconds left on NBA TV! pic.twitter.com/w04Ltwtk4E

Exploring the reasons behind the disappointing start of the season from the Dallas Mavericks as they are on a four-game losing streak.

Luka Dončić has never exactly been a candidate for the All-Defensive teams, but his work on defense Thursday represented a low point for one of the best young players in the NBA, despite another brilliant game on offense.