65 photos: Harrison Barnes through the years

Dallas Mavericks forward Harrison Barnes (40) in action against the Cleveland Cavaliers during the game at the American Airlines Center. The Mavericks defeat the Cavaliers 104-97.

Dallas Mavericks forward Harrison Barnes (40) reacts during the game against the Utah Jazz at American Airlines Center.

Dallas Mavericks forward Harrison Barnes (40) warms up before the game against the Miami Heat at the American Airlines Center.

Dallas Mavericks forward Harrison Barnes (40) drives to the basket past Los Angeles Lakers forward Brandon Ingram (14) during the first half at American Airlines Center.

Dallas Mavericks forward Harrison Barnes (40) dribbles as LA Clippers forward Blake Griffin (32) defends during the first half at American Airlines Center.

Dallas Mavericks forward Dirk Nowitzki (41) celebrates with forward Harrison Barnes (40) during the second half against the LA Clippers at American Airlines Center.

Dallas Mavericks forward Harrison Barnes (40) reacts after scoring a basket in the fourth quarter against the Milwaukee Bucks at BMO Harris Bradley Center. The Mavericks won 109-105.

Golden State Warriors forward Harrison Barnes (40) dunks over Cleveland Cavaliers guard Mike Miller, left, and center Timofey Mozgov during the second half of Game 5 of basketball's NBA Finals in Oakland, Calif., Sunday, June 14, 2015.

The members of the Golden State Warriors celebrate after winning the NBA Finals against the Cleveland Cavaliers in Cleveland, Wednesday, June 17, 2015. The Warriors defeated the Cavaliers 105-97 to win the best-of-seven game series 4-2.

Ames, Iowa native and Golden State Warriors forward Harrison Barnes (middle) celebrates with teammates following Game Six of the 2015 NBA Finals at Quicken Loans Arena on June 16, 2015 in Cleveland, Ohio.

Cleveland Cavaliers forward LeBron James (23) handles the ball against Golden State Warriors forward Harrison Barnes (40) during the first quarter in game three of the NBA Finals at Quicken Loans Arena.

Golden State Warriors forward Harrison Barnes (40) warms up before game four of the NBA Finals against the Cleveland Cavaliers at Quicken Loans Arena.

Golden State Warriors forward Harrison Barnes (40) goes for a rebound against the Cleveland Cavaliers in game four of the NBA Finals at Quicken Loans Arena.

Golden State Warriors forward Harrison Barnes (40) chases after a loose ball during the third quarter against the Cleveland Cavaliers in game four of the NBA Finals at Quicken Loans Arena.

Golden State Warriors forward Harrison Barnes (40) shoots against Cleveland Cavaliers center Timofey Mozgov (20) during the first quarter of game six of the NBA Finals at Quicken Loans Arena.

Golden State Warriors forward Harrison Barnes (40) shoots against the Houston Rockets during game two of the Western Conference Finals of the NBA Playoffs on May 21 in Oakland, Calif.

Golden State Warriors forward Harrison Barnes (40) dunks the basketball against Houston Rockets guard Corey Brewer (33) during game one of the Western Conference Finals of the NBA Playoffs on May 19 in Oakland, Calif.

Golden State Warriors forward Harrison Barnes (40) dribbles the basketball during game two of the second round of the NBA Playoffs against the Memphis Grizzlies on May 5 in Oakland, Calif.

Golden State Warriors forward Harrison Barnes (40) controls the ball against Memphis Grizzlies guard Courtney Lee (5) during game two of the second round of the NBA Playoffs against the Memphis Grizzlies on May 5 in Oakland, Calif.

Golden State Warriors forward Harrison Barnes (40) watches the basketball during game one of the second round of the NBA Playoffs against the Memphis Grizzlies on May 3 in Oakland, Calif.

Golden State Warriors forward Harrison Barnes (40) shoots during the game against the Houston Rockets in game three of the Western Conference Finals of the NBA Playoffs on May 23 in Houston, Texas.

Golden State Warriors forward Harrison Barnes (40) looks to pass around Houston Rockets center Dwight Howard (12) during game four of the Western Conference Finals of the NBA Playoffs on May 25 in Houston, Texas.

Golden State Warriors forward Harrison Barnes (40) shoots over Houston Rockets forward Trevor Ariza (1) during game five of the Western Conference Finals of the NBA Playoffs on May 27 in Oakland, Calif.

Golden State Warriors forward Harrison Barnes (40) dunks against the Houston Rockets in game five of the Western Conference Finals of the NBA Playoffs on May 27 in Oakland, Calif.

Golden State Warriors forward Harrison Barnes (40) shoots against the Houston Rockets in game five of the Western Conference Finals of the NBA Playoffs on May 27 in Oakland, Calif.

Harrison Barnes #40 of the Golden State Warriors poses for a portrait during the 2012 NBA Rookie Photo Shoot at the MSG Training Center on August 21, 2012 in Tarrytown, New York. 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.

Ames Harrison Barnes passe the ball to a teammate during their game against Urbandale at the Knapp Center Monday night.

Harrison Barnes dunks during the first half in a CIML basketball doubleheader between Ames and Urbandale at Knapp Center Monday.

Ankeny junior Grant Lang battles Ames senior forward and North Carolina recruit Harrison Barnes down the lane as the Ames Little Cyclones play the Ankeny Hawks in Ankeny. The #1 rated Little Cyclones won 80 to 50 to remain undefeated (7-0) on the season.

Ames senior forward and North Carolina recruit Harrison Barnes prepares to sink another free throw as the Ames Little Cyclones play the Ankeny Hawks in Ankeny. The #1 rated Little Cyclones won 80 to 50 to remain undefeated (7-0) on the season.

(20) Monty Robinson, (10) Tanner Hansen, (54) James Kohler, (42) Doug McDermott and (40) Harrison Barnes with their state qualifier banner.

Ames High seniors Doug McDermott and Harrison Barnes are looking to lead the Little Cyclones to back-to-back state titles.

Ames' Harrison Barnes shoots over Cedar Rapids Washington's Josh Oglesby at the boys State Basketball Tournament Wednesday at Wells Fargo Arena.

Ames' Harrison Barnes dribbles around Cedar Rapids Washington's Wes Washpun at the boys State Basketball Tournament Wednesday at Wells Fargo Arena.

Ames' #40 Harrison Barnes goes up to slam dunk the ball against Southeast Polk as the rest of the players on the floor look on in Class 4-A championship final game at boys' state basketball tournament at Wells Fargo Arena Saturday night, March 13th.

Ames' #40 Harrison Barnes, right, gets a hand from teammate #14 James Wandling, left, after Banes slammed dunked the ball against Southeast Polk just as the horn sounded for the end of the 1st quarter in Class 4-A championship final game at boys' state basketball tournament at Wells Fargo Arena Saturday night, March 13th.

Ames' #40 Harrison Barnes, left, gets a hug from #20 Monty Robinson, right, after Ames win over Southeast Polk in Class 4-A championship final game at boys' state basketball tournament at Wells Fargo Arena Saturday night, March 13th.

Ames' star #40 Harrison Barnes gets a hug from his future head college coach Roy Williams, of North Carolina, after Barnes lead his team to win over Southeast Polk in Class 4-A championship final game at boys' state basketball tournament at Wells Fargo Arena Saturday night, March 13th.

Ames' #40 Harrison Barnes, center, goes up after a lop pass as Southeast Polk's #20 Nate Greim, left, looks up in Class 4-A championship final game at boys' state basketball tournament at Wells Fargo Arena Saturday night, March 13th.

Ames players celebrated with trophy after their win over Southeast Polk in Class 4-A championship final game at boys' state basketball tournament at Wells Fargo Arena Saturday night, March 13th. Left to right: #12 Michael Weber, with all-touranment medal in his mouth, Harrison Barnes and Doug McDermott, big smile on his face. (shot: 03/13/10) Photo by BILL NEIBERGALL

Ames'#40 Harrison Barnes, right, holds the 2010 4-A Basketball State Championship banner as his teammates celebrated after Ames' win over Southeast Polk in Class 4-A championship final game at boys' state basketball tournament at Wells Fargo Arena Saturday night, March 13th.

Wrapped in the 2010 4-A Basketball State Championship banner, Ames' #40 Harrison Barnes stands with the all-tourament team, of which he was named captain, after win over Southeast Polk in Class 4-A championship final game at boys' state basketball tournament at Wells Fargo Arena Saturday night, March 13th.

During pre-game warm ups, Ames High School senior Harrison Barnes got a handshake from a teammate before the 2010 McDonald's All- American Game Wednesday night, March 31st. Barnes competed with 23 other All-American boys in East vs West game at the Value City Arena in Columbus, Ohio.

Ames High School alum Harrison Barnes, right, competed in the 2010 McDonald's All- American Game. Barnes now works as an unpaid intern for the social media giant Facebook as part of a company program to expand its reach within the sports world.

Ames High School senior #40 Harrison Barnes, left, on the West team, went up to dunk over East's #35 Reggie Bullock, right, of Kinston High School, NC, in early first half action in the 2010 McDonald's All- American Game Wednesday night, March 31st. The two players will be teammates and roommates at the University of North Carolina next year. Barnes competed with 23 other All-American boys in East vs West game at the Value City Arena in Columbus, Ohio.

Ames High School alum Harrison Barnes now works as an unpaid intern for the social media giant Facebook as part of a company program to expand its reach within the sports world.

Ames High School senior Harrison Barnes looked at teammate after a break down on a play in the first half in the 2010 McDonald's All- American Game Wednesday night, March 31st. Barnes competed with 23 other All-American boys in East vs West game at the Value City Arena in Columbus, Ohio.

Harrison Barnes shoots the only three point basket he made against Illinois in the first half of their game at Assembly Hall in Champaign Tuesday night.

North Carolina forward Harrison Barnes, right, gets bucket over Evansville forward Clint Hopf during the first half of an NCAA college basketball game in Evansville, Ind., Wednesday, Dec. 8, 2010.

North Carolina head coach Roy Williams talks to player Harrison Barnes during practice Thursday, March 24, 2011, in Newark, N.J., for an East regional semifinal game in the NCAA college basketball tournament.

Mar 11, 2012; Atlanta, GA, USA; North Carolina Tar Heels forward Harrison Barnes (40) smiles after a foul against the Florida State Seminoles in the second half during the finals of the 2012 ACC Men's Basketball Tournament at Philips Arena.

North Carolina's Harrison Barnes (40) reacts after making a 3-point shot in the second half of North Carolina's 92-87 overtime win over Clemson in an NCAA college basketball game at the Atlantic Coast Conference tournament in Greensboro, N.C., Saturday, March 12, 2011.

North Carolina's Harrison Barnes (40) drives around Mississippi Valley State's Paul Crosby (32) during the first half of an NCAA college basketball game in Chapel Hill, N.C., Sunday, Nov. 20, 2011. North Carolina won 101-75.

Harrison Barnes #40 of the North Carolina Tar Heels during the Quarterfinals of the 2012 ACC Men's Basketball Conferene Tournament at Philips Arena on March 9, 2012 in Atlanta, Georgia.

Golden State Warriors small forward Harrison Barnes (40) goes in for a basket against the defense of Los Angeles Lakers center Chris Kaman (9) during the first half at Citizens Business Bank Arena.

Golden State Warriors forward Harrison Barnes, center, splits the defense of Los Angeles Lakers forward Marcus Landry, left, and Lakers center Robert Sacre (50) in the fourth quarter during an NBA basketball preseason game Saturday, Oct. 5, 2013, in Ontario, Calif. Lakers won the game 104-95.

Feb 15, 2014; New Orleans, LA, USA; Golden State Warriors forward Harrison Barnes (4) dunks during the 2014 NBA All Star dunk contest at Smoothie King Center.

Jan 26, 2014; Oakland, CA, USA; Golden State Warriors forward Harrison Barnes (40) drives to the hoop against the Portland Trail Blazers in the fourth quarter at Oracle Arena. The Warriors defeated the Trail Blazers 103-88.

Feb 14, 2014; New Orleans, LA, USA; Golden State Warriors forward Harrison Barnes (40) and Boston Celtics forward Jared Sullinger (7) react during warm-ups at Smoothie King Center.

June 28, 2012; Newark, NJ, USA; Harrison Barnes (North Carolina) is presented with a cap after being introduced as the number seven overall pick to the Golden State Warriors during the 2012 NBA Draft at the Prudential Center.

June 28, 2012; Newark, NJ, USA; Harrison Barnes (North Carolina) is presented with a cap after being introduced as the number seven overall pick to the Golden State Warriors during the 2012 NBA Draft at the Prudential Center.

June 28, 2012; Newark, NJ, USA; Harrison Barnes (North Carolina), right, is introduced as the number seven overall pick to the Golden State Warriors by NBA commissioner David Stern during the 2012 NBA Draft at the Prudential Center.

North Carolina's Harrison Barnes talks on the phone moments after being selected No. 7 by the Golden State Warriors during the NBA basketball draft, Thursday, June 28, 2012, in Newark, N.J.