What always manages to surprise me about the NBA is when I realize just how young some of these players really are. Some of the athletes performing jaw-dropping dunks, draining three-pointers, and competing against renowned NBA superstars are just one year removed from their final semester of high school. Most people assume that along with the fame and the money comes a lavish life of partying, and they wouldn't necessarily be wrong (see: J.R. Smith), but there also exists a handful of players that are so young they can't legally go out and buy a beer. This is a list of the Top 10 NBA ballers under 21 years old.

10. Ben Simmons, Philadelphia 76ers, Age: 20 (7/20/96)

Injuries have prevented the kid touted as the ‘Next LeBron James’ from debuting in the NBA, but with the talent we know Simmons has, it was impossible to keep him off the list. Ben Simmons was the No. 1 overall pick, without even playing in the NCAA tournament. Simmons can run an offense as a point-forward, honing some excellent passing abilities. The entire league is anticipating his return to the court, and if he can live up to the hype surrounding him, expect Ben Simmons to be a multi-year all-star selection, and maybe even win a MVP award in the future.

9. Damontas Sabonis, Oklahoma City Thunder, Age: 20 (5/3/96)

Sabonis was the 11th pick in the 2016 draft, and is the son of former NBA great Arvydas Sabonis. He is a versatile 6-11 big man with an excellent three point shot (41.6 percent). Currently in his rookie year, Sabonis is performing well, and at 20 years old he has a lot of time to develop his game. Look for Sabonis to work on his rebounding ability and build up some strength before he becomes a real threat in the league.

8. Marquese Chriss, Phoenix Suns, Age: 19 (7/2/97)

Chriss was selected 8th overall out of Washington. He is a proficient rebounder and can splash the three ball as well, converting on 31.3 percent of his efforts. He has shown glimmers of his potential, most notably posting a double-double against the Knicks in December. As he works his way into the rotation, more and more people are beginning to see the talent Chriss has under his arsenal. The kid is extremely athletic for his size, with excellent dunking ability, and will continue to surprise opposing players his quickness. For now, he is just another rookie trying to make a mark on his organization, but give the 19 year old a few years and he could develop into dominant power forward.

7. Brandon Ingram, Los Angeles Lakers, Age: 19 (9/2/97)

The Lakers took Ingram with the 2nd overall pick in the 2016 draft, and with that comes very high expectations from the league. The former Duke Blue Devil was sensational in college, and was deemed the next Kevin Durant due to their similarly lanky frames. Ingram's rookie campaign has not gone as anticipated however, with the 19 year old managing just 7.5 points per game on an abysmal 35 percent shooting. Even worse is his 25 percent conversion rate from beyond the arc. The Lakers are hoping Ingram can turn it around in the second half of the season and take strides towards realizing his potential to be an NBA superstar.

6. Jamal Murray, Denver Nuggets, Age: 19 (2/23/97)

Denver took Jamal Murray out of Kentucky with the seventh overall pick in the 2016 draft. Murray is offensively well equipped for the league, if he can improve his shot selection. Shooting just 37.6 percent, there is definitely room to grow. He has shown flashes of potential, most notably a hot streak of four games in mid-November in which Murray averaged 21.3 points per game, shooting 50 percent from the field. If Murray can recapture some of that form, expect him to be a valuable asset to the Nuggets, and a future sixth man in the league with potential to be a starter.

5. Emmanuel Mudiay, Denver Nuggets, Age: 20 (3/5/96)

Emmanuel Mudiay opted to play for money in China, to support his family, rather than play college ball in the US. He was injured for most of the season, and still managed to get selected in the draft lottery. Inconsistency, however, has plagued Mudiay throughout his NBA career. Far too often he has a great night followed by a horrendous outing the next game. In one and a half seasons, Mudiay has been unable to find his shooting stroke, only managing to knock down 36 percent of his career shots. Still only 20 years old, the Nuggets point guard has a long time left to improve his game, and Denver fans are hoping that he is the floor general of the future.

4. Justise Winslow, Miami Heat, Age: 20 (3/26/96)

Winslow was taken 10th overall in the 2015 draft by the Heat, and was immediately propped into a decent sized role, playing 28 minutes per contest. With the departure of Dwyane Wade this offseason, Winslow has filled an even larger part, to the tune of 35 minutes per game. Winslow is an extremely skilled perimeter defender, and also posts 1.5 steals per game. If Winslow can improve his offensive efficiency, he could potentially be an All-Star selection in the future. Miami fans should be excited by this 20 year old, as he is the real deal and will be a vital part of their rotation for years to come.

3. Myles Turner, Indiana Pacers, Age: 20 (3/24/96)

If you haven't heard of Myles Turner, familiarize yourself. Turner has exploded onto the scene in 2016. The former 11th overall pick, just 1 pick after Justise Winslow, has become a dominant big man for the Pacers. He began to break out in the second half of last season, and has continued the upwards trend into his sophomore campaign. Turner is posting averages of 15 points and 7 rebounds per contest, and is likely a contender for the Most Improved Player award. He is an athletic freak, able to come up with some huge dunks. Oh yeah, and did I mention he rejected LeBron at the rim as a rookie? The former Texas Longhorn is playing excellent basketball, and he is only 20 years old. I'm predicting multiple All-Star appearances in the future for Myles Turner.

2. D'Angelo Russell, Los Angeles Lakers, Age: 20 (2/23/96)

Unfortunately for Russell, most of his rookie year fame came from him snitching on teammate Nick Young for cheating on pop-star Iggy Azalea. The media was all over the story, giving the Lakers a lot of unwanted press, and Russell was a hated man for a while. In his sophomore season now, Russell has put the past behind him and people are beginning to move on. D'Angelo is the floor general of the most renowned basketball franchise in the world, so he is playing under a constant spotlight. The 20 year old is stringing together an excellent season this year, despite missing two weeks to injury, and the future looks bright in Los Angeles. Expect Russell to be an All-Star within a few seasons, especially if he can improve his passing ability.

1. Devin Booker, Phoenix Suns, Age: 20 (10/30/96)

Selected 13th overall in the 2015 draft, the former Wildcat was taken for his shooting ability. Unexpectedly, Booker was asked to take on a large workload last year when Suns star, Eric Bledsoe, went down to an injury. Devin Booker prospered with his increased role, and became a valuable asset to the Suns. In his sophomore season, Booker is averaging 19 points per game and has upended Brandon Knight for the starting shooting guard spot. At 20 years of age, Booker has a long career ahead of him, and is already becoming a league favorite. Booker has shown flashes of being a superstar, including an impressive 39 point game this season. Look for him to improve his shooting percentages and become one of the top shooting guards in the NBA, as well as a future all-star.