MileSplit Staff Mar 27, 2026 PRO See the rest of this article Access the complete article with MileSplit PRO. Subscribe to keep reading Already a subscriber? Log in. Improvement Rankings: Top Missouri Boys Javelin marks compared to their season’s best performances from 2025. Most Improved - Javelin Throw Comparing 2026 season to 2025 season Rank Improved Athlete/Team Class 2025 PR 2026 PR 1 +18.26m Tyuan Jackson William Chrisman High School 2028 22.70m 40.96m 2 +13.47m Clayton Sandifer Rolla High School 2027 21.24m 34.71m 3 +10.56m Tandon Baker Cuba High School 2027 17.82m 28.38m 4 +10.40m adian basham Crest Ridge High School 2026 25.44m 35.84m 5 +10.26m Tapiwanashe Mandizha Hickman High School 2027 32.23m 42.49m 6 +9.92m ...