Who are the brightest young stars in the NBA? We're counting them down on ESPN.com.

And who's No. 1? Should it be Anthony Davis, Giannis Antetokounmpo, Karl-Anthony Towns, Kristaps Porzingis, Joel Embiid or another rising star?

We asked our experts to rate the league's best players under 25 years old, and we're rolling out the rest of our top 50 over the next few days, leading up to the Rising Stars Challenge during All-Star Weekend.

If you want to get involved in the discussion, #NBArank is the Twitter hashtag. You also can follow along @ESPNNBA and on Facebook.

On to the countdown!

#NBArank Rising Stars: 21-25

Issac Baldizon/NBAE/Getty Images

Washington Wizards | SF

Age: 23 | @OttoPorter

Drafted No. 3 in 2013

Stats & Info: Porter currently leads the NBA in 3-point percentage, shooting a career-high 46 percent from long range. Tim Legler is the only player in Wizards history to lead the league in 3-point percentage for an entire season (1995-96).

Scott Cunningham/NBAE/Getty Images

Atlanta Hawks | PG

Age: 23 | @DennisMike93

Drafted No. 17 in 2013

Stats & Info: Schroder, Chris Paul and Russell Westbrook are the only players in the NBA to average at least 18 points and 7 assists per 36 minutes in each of the past three seasons.

Photo by Bill Baptist/NBAE via Getty Images

Oklahoma City Thunder | C

Age: 24 | @Enes_Kanter

Drafted No. 3 in 2011

Stats & Info: Since the start of last season, among those to play in at least 100 games, Kanter ranks 10th in the NBA in player efficiency rating. He has come off the bench in 128 of those 129 games -- every other player in the top 10 has started every game.

Layne Murdoch/NBAE via Getty Images

Los Angeles Lakers | PF

Age: 22 | @J30_RANDLE

Drafted No. 7 in 2014

Stats & Info: Randle is one of seven players with multiple triple-doubles this season. Of that group, only Randle and Milwaukee's Giannis Antetokounmpo are under the age of 25.

Layne Murdoch/NBAE via Getty Images

Oklahoma City Thunder | SG

Age: 24 | @VicOladipo

Drafted No. 2 in 2013

Stats & Info: The runner-up in the 2015 Slam Dunk Contest, Oladipo continues to soar. Since he entered the league in 2013, only five guards have more dunks than him.

26-30 | Full list | 16-20