BIG LAST EFFORT

Compares the most recent performance figure against the average of the 2nd, 3rd, and 4th most recent valid figures. An 8-point jump is statistically significant and typically reflects a genuine fitness or class improvement rather than noise. Horses that delivered a big effort last out are often in the best form of a recent cycle. The key distinction from CAREER_BEST_RECENT is that this measures relative improvement rather than absolute peak — a horse coming off a modest base can trigger BIG_LAST_EFFORT before it becomes a bounce concern.