The Step Back is rolling out its 25-under-25 list over this week. Follow along with our rankings of the top 25 NBA players under the age of 25.
The first two picks in the 2018 NBA Draft were big men. Neither was the best big in the Draft.
When the Phoenix Suns selected Deandre Ayton, he had to wait. When the Sacramento Kings picked Marvin Bagley III, he had to wait. When the Memphis Grizzlies submitted their No. 4 pick, his wait mercifully ended.
Jaren Jackson Jr. stands 6-foot-11.25 in shoes, his wingspan spanning 89.25 cartoonish inches. He boasts legitimate center size, accenting his elite frame with genuinely guard-like mobility, intelligence and recognition that belie his age, and a smooth and effective (though somewhat unorthodox) stroke out to the 3-point line.

Jackson captures the zeitgeist of NBA basketball in 2018. In theory, heāll eventually switch like Clint Capela, protect the rim like Rudy Gobert, bomb like Karl-Anthony Towns. What Jaren Jackson could be is intoxicating. Unlike most rookies, what he already is is compelling for a team looking to compete right away.
JJJās most apparent offensive skill is his shooting. In his lone season at Michigan State, he connected on 39.6 percent of his 2.7 3-point attempts per game. Those attempts were predominantly what youād expect from a stretch-big: spot-up and pick-and-pop looks.
Never derive meaningful takeaways from Summer League, but there were some meaningful takeaways from Jacksonās Summer League. He flaunted a shot that wasnāt trapped within the confines of a big manās shot. He demonstrated versatility:
Jackson shot off movement. He even hoisted an attempt or two off-the-dribble. JJJ isnāt entering the NBA as a big-man shooter in the class of Lauri Markkanen and Kevin Love, but heās already a pretty advanced shooter for his position.
Jacksonās rookie-year usage will be comprised largely of those classic big-man shots, but Memphis displayed a willingness to get creative with its young stud in Summer League. The Grizzlies wonāt fully leverage Jacksonās shooting in 2018-19, but theyāll allow him to experiment, become comfortable, and grow into a potentially devastating shooter.
Otherwise, Jacksonās not a particularly advanced offensive player, though he does possess impressive coordination, notably as a ball-handler:
In 2018-19, Jacksonās ball-handling will allow him to attack closeouts at a high level, enabling him to excel as a dynamic spot-up threat. In the future, he could be a force as a faceup scorer, combining his handle with his superior length and quickness to create his own offense.
Jackson is a fascinating and useful offensive player in the modern NBA, but itās his defense that earned him the title of best big in the Draft:
Jacksonās awareness as a help defender borders on preternatural, but his movement skills are somehow more uncanny. He doesnāt cover ground; he obliterates the concepts of time and space, teleporting from one spot on the court to another, erasing shots the laws of physics tell us he should never reach.
Jacksonās superhuman movement extends to his lateral mobility, which empowers him to contain virtually any opponent. Each year, as the playoffs progress, we see slow-footed defensives anchors like Gobert and Joel Embiid defanged. Theyāre neutralized on the perimeter by the leagueās premier stretch-bigs, exposed by the NBAās elite one-on-one scorers. In time, Jaren should prove immune to that unwelcome fate.
None of this is to say Memphisā new toy is without flaw. Thereās some concern about Jacksonās traditional big-man game. Heās not a dominant finisher, lacking in sophistication and vertical explosion on the interior. He was prone to bouts of offensive invisibility in college. He exists absent urgency, rarely feeling obligated to dominate conventionally.
Memphis is not NBA nirvana. Itās one of the leagueās smallest markets. Its franchise is plagued by an absentee and disinterested owner. The Grizzlies are caught in an awkward limbo, refusing to enter the rebuild they so desperately need in favor of delusions of postseason grandeur.
Memphis and Jaren Jackson Jr. are, in a way, perfect for each other, though. Both are hard-nosed and unassuming, surely, but the virtue of their partnership extends beyond symbolism. For better or worse, the Grizzlies intend to compete in 2018-19. Jackson is ready.
Partnered with Marc Gasol, Jackson will be a necessity. Heāll add help rim protection, covering ground Gasol never was before time and injuries and the changing game delivered a haymaker to the former Defensive Player of the Yearās defensive impact. Jacksonās mobility should render him viable tracking 4-men 20-plus feet from the basket.
Nurtured by Mike Conley, Jackson will be spoon-fed on offense. He wonāt be challenged. Instead, heāll be an outlet for efficient corner 3s when Gasol rolls hard to the rim; heāll splash pick-and-pop treys delivered via silver platter from Memphisā star point guard.
Yet 2018-19 will be more waiting for Jaren Jackson Jr. Heāll exist in his role. Heāll contribute in a way most rookies canāt. But he will not be unleashed. Jackson wonāt be a high-volume off-movement shooter or ball-handler. Heck, he probably wonāt even play his optimal position. This year, Jackson will be unusually impactful, but for him to be great and optimized, weāll all have to wait.
This yearās 25-under-25 illustrations are the work of Andrew Maahs of Basemint Design. You can follow on Twitter, @BasemintDesign.