Jaren Jackson Jr. is the reigning NBA Defensive Player of the Year. He finished plus 2.6 on the FiveThirtyEight RAPTOR defensive rating, which was 18th best last season. Perhaps a more accurate representation of his defensive impact is that Jackson Jr. led the league in blocks for the second time in his young career at age 24. Top 25 NBA Players Under 25: No. 7 – Jaren Jackson … [Read more...] about Top 25 NBA Players Under 25: No. 7 – Jaren Jackson Jr.