MileSplit Staff Mar 05, 2026 PRO See the rest of this article Access the complete article with MileSplit PRO. Subscribe to keep reading Already a subscriber? Log in. 2026 Improvement Rankings: Highlighting the top Boys Long Jump performers from Illinois compared to their season best results from 2025. Most Improved - Long Jump Comparing 2026 season to 2025 season Rank Improved Athlete/Team Class 2025 PR 2026 PR 1 +5' 4.93" Kendall Witherspoon Flossmoor (Homewood-F.) 2028 14-02.50 19-07.43 2 +5' 2.58" Jack Littig Naperville (Central) 2027 14-05.25 19-07.83 3 +4' 4.40" Daniel Felli Mundelein (H.S.) 2028 15-05.00 19-09.40 4 +4' 4.27" Ken'Ron Morgan Minooka 2028 13-00.00 17-04.27 5 +4' 4.09" Chancey Robinson Frankfort (Lincoln-Way East) 2026 17-03.75 21-07...