Race Comment Explainer

Original comment with matches highlighted:

mid-division, t insid over 1f out, edged left inside final furlong, no impression on leaders

Matched phrases & meanings

Phrase	Meaning
edged left inside final furlong	Under pressure from the jockey's urging or from fatigue, the horse drifted slightly to the left within the last 200 meters.
Mid-division	Running in the middle of the pack.
Headway	The horse was moving up through the field.

Summary

Under pressure from the jockey's urging or from fatigue, the horse drifted slightly to the left within the last 200 meters.
Running in the middle of the pack.
The horse was moving up through the field.