Dirk Nowitzki

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Former NBA player Avery Johnson, left speaks with West Team's Dirk Nowitzki, of the Dallas Mavericks (41) before the NBA All Star basketball game, Sunday, Feb. 16, 2014, in New Orleans. (AP Photo/Bill Haber)

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Dallas Mavericks forward Dirk Nowitzki (41) shoots in front of Indiana Pacers forward David West during the first half of an NBA basketball game in Indianapolis, Wednesday, Feb. 12, 2014. (AP Photo/Michael Conroy)

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Dallas Mavericks' Dirk Nowitzki (41) reacts after dunking during the first half of an NBA basketball game against Charlotte Bobcats in Charlotte, N.C., Tuesday, Feb. 11, 2014. (AP Photo/Chuck Burton)

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Dallas Mavericks' Dirk Nowitzki (41) falls after being injured guarding Charlotte Bobcats' Josh McRoberts (11) during the first half of an NBA basketball game in Charlotte, N.C., Tuesday, Feb. 11, 2014. Nowitzki was taken to the locker room after the play. (AP Photo/Chuck Burton)

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Dallas Mavericks forward Dirk Nowitzki, right, drives to the basket as Utah Jazz's Marvin Williams (2) defends in the first half of an NBA basketball game, Friday, Feb. 7, 2014, in Dallas. (AP Photo/Tony Gutierrez)

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Memphis Grizzlies center Marc Gasol (33), of Spain, reaches for a rebound over Dallas Mavericks defenders Dirk Nowitzki, left, DeJuan Blair (45), Jae Crowder and Vince Carter (25) in the first half of an NBA basketball game, Wednesday, Feb. 5, 2014, in Memphis, Tenn. (AP Photo/Lance Murphey)

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Cleveland Cavaliers power forward Tristan Thompson (13) defends against a shot by Dallas Mavericks' Dirk Nowitzki of Germany in the second half of an NBA basketball game, Monday, Feb. 3, 2014, in Dallas. Nowitzki scored 23-points in the 124-107 Mavericks win. (AP Photo/Tony Gutierrez)

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Dallas Mavericks power forward Dirk Nowitzki (41) of Germany drives between Cleveland Cavaliers' Kyrie Irving (2) and Tristan Thompson, rear, to the basket for a shot attempt in the first half of an NBA basketball game, Monday, Feb. 3, 2014, in Dallas. (AP Photo/Tony Gutierrez)

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Sacramento Kings' Rudy Gay (8) defends as Dallas Mavericks forward Dirk Nowitzki (41) turns to positions for a shot attempt in the second half of an NBA basketball game, Friday, Jan. 31, 2014, in Dallas. Nowitzki scored 34 points and the Mavericks held off Sacramento 107-103. (AP Photo/Tony Gutierrez)

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Sacramento Kings forward Rudy Gay (8) dunks as Dallas Mavericks' Jae Crowder, from second left, Dirk Nowitzki and Jose Calderon, right, watch in the first half of an NBA basketball game, Friday, Jan. 31, 2014, in Dallas. (AP Photo/Tony Gutierrez)

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Dallas Mavericks' Dirk Nowitzki (41) positions against Sacramento Kings' Quincy Acy for an opening to the basket in the first half of an NBA basketball game, Friday, Jan. 31, 2014, in Dallas. (AP Photo/Tony Gutierrez)