RELATED: All-Summer 2017 | All-Summer 2018

Rivals will release its first 2019 rankings later this month, but here is a sneak peek at some players who impressed us this summer. At the top of the list was R.J. Barrett, who impressed multiple times from his wing position.

Summer performance: One of two frontrunners to open up as the No. 1 player in the class when we release our first 2019 ranking later this month, the 6-foot-6 wing was spectacular at times. Playing for Canada’s 17U National Team, Barrett was one of the leading scorers at the World Championships and with the UPlay 16U team, he was pretty much unstoppable and led them all the way to the title game of Nike’s 16U Peach Jam. His jump shot and ball-handling are catching up to his athleticism and his future is quite bright.

Recruitment: Duke, Kansas, Kentucky and Texas are involved early while UCLA, Oklahoma, Baylor and USC have offered.

Summer performance: In a duel with Barrett to start off in the No. 1 spot in 2019, Bassey was outstanding himself. On the grassroots circuit, it was a common sight to see him take rebounds and go coast to coast. At the NBPA Top 100 Camp, Bassey was dominant on the glass against players two classes ahead of him. He’s best around the rim, but has some budding skill facing the hoop and is already quite productive for a young big man.

Recruitment: Baylor, Creighton, Texas A&M, Kansas, Tennessee and Oklahom have offered.

Summer performance: One of the most explosive two-way players in the class, the 6-foot-6 Brown was at his best in transition. Playing with the Georgia Stars, he was almost impossible to keep from getting to the rim and he’s got the ability to be just as tough on the defensive end.

Recruitment: Clemson, Florida State, Georgia Tech, Tennessee, Auburn, Georgia, Oklahoma State and Wake Forest have already offered.

Summer performance: Nike Team Florida’s 15U team was one of the most successful 15U teams in the country and the 6-foot-9 Carey had a lot to do with it. A strong kid who can score with his back to the basket, run the floor and face up to make mid-range jumpers, he was a big part of NTF winning the 15U title at the Peach Jam and the 16U title at the Las Vegas Classic.

Recruitment: Miami, Louisville, Florida, USC and Baylor have offered.

Summer performance: A high school and summer teammate of Carey’s, Koprivica showed a skill level far beyond his age. Already a legit 7-footer, he’s got more skill than many college post players, runs the floor very well, is a rim protector and can score in bunches around the rim.

Recruitment: Miami, Louisville, Florida, USC and Baylor have offered.

Summer performance: Playing up on the 17U level with D1 Minnesota, Hurt was quite impressive on the Adidas Circuit. Pushing 6-foot-9, he showed tremendous mobility, high skill and above average athleticism. In many ways, Hurt reminded us of a young David Lee with his inside/outside game and ability to crash the glass.

Recruitment: North Carolina, Kansas, Louisville, Marquette, Ohio State, UCLA, Oregon, Minnesota, Virginia, Florida, Wisconsin and others have offered.

Summer performance: Playing for Team Rio and at events like the Under Armour All-America Camp, Lewis was sensational more often than not. A true high flyer who can really get to the rim, Lewis also impressed with his playmaking ability for others in the open floor. As good as he is on the offensive end, Lewis may have been even better defensively and he's arguably the best perimeter defender in high school basketball regardless of class.

Recruitment: Xavier, Seton Hall, Rutgers, Florida, St. John's, Temple, VCU, Villanova, Notre Dame, Maryland and others have offered.

Summer performance: Playing mostly on the Under Armour Circuit, the 7-footer showed tremendous promise. Though he is skinny, Marial played strong around the basket, embraced physicality and served as one of the top rim protectors regardless of class. He moves pretty well given his size and youth, and showed some touch and promise as an offensive player.

Recruitment: Iowa, West Virginia, Georgetown, Florida State and Georgetown have offered.

Summer performance: Playing for the Compton Magic’s top 17U program, Okongwu didn’t always get a bunch of touches offensively, but he was a defensive and rebounding standout. A bouncy insider who can get up and down the floor, Okongwu is already an elite defender and showed promise as a scorer.

Recruitment: UCLA, TCU, UNLV, Washington State, Utah, Alabama, USC and Arizona State have offered.

Summer performance: Thanks in large part to the play of the 6-foot-7 Robinson, KC Run GMC’s 15U team only lost one game all spring and summer. Already an elite rebounder, Robinson has a tremendous motor that he pairs with a high basketball IQ.

Recruitment: Kansas, Kansas State, Creighton, Washington and Wake Forest have offered.

Summer performance: A crafty combo guard who can really create space off the dribble, Sherfield regularly topped the 20-point mark against 17U competition while playing for YGC36. He’s a streaky shooter from deep, but already strong and capable of dictating the pace of the game against older players.

Recruitment: UCLA, New Mexico, Kansas, Texas, SMU, Baylor and Oklahoma State have offered.

Summer performance: The younger brother of former Indiana star Christian Watford, he played up on the 17U level all summer long with the Alabama Challenge and M33M. Watford isn’t a crazy athlete, but his feel for the game, crafty setups and overall aptitude for scoring the ball in a variety of ways are already off the charts.

Recruitment: Auburn, Alabama and Mississippi State have offered.