DALLAS, TX - OCTOBER 20: Dirk Nowitzki #41 of the Dallas Mavericks reacts during the game against the Sacramento Kings on October 20, 2017 at the American Airlines Center in Dallas, Texas. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. Mandatory Copyright Notice: Copyright 2017 NBAE (Photo by Glenn James/NBAE via Getty Images)