Jackson O'Brien

Unattached (TX) · 10 · TX D1District 9WEST TEXAS ASSOCIATION CROSS4A · Compare head to head

what a rating means

100 is the average runner in the athlete's pool; a rating of 133 means 33% faster than that average runner. Ratings are distance-normalised and course-adjusted, so a hard course and a fast track land on one number. Each pool (high school boys, college women, middle school…) has its own average, and the HS-equivalent view puts every pool on the high-school scale.

Athlete rating —

Races 1

Seasons 1 2026

Speed rating — all races

Track & Field

TF speed rating

2026 TF —

Unattached (TX) · Grade 10 ✱

Date	Meet	Event	Result	Place	Rating	Difficulty	PR/SR Flags
2025-08-02	AAU Junior Olympic Games	discus	38.87m	—	—	-1.0%