Race Comment Explainer

Original comment with matches highlighted:

soon tracking leader out wide, d over 1f out, driv 1f out, driven clear inside final

Matched phrases & meanings

Phrase	Meaning
soon tracking leader out wide	After the start, the horse quickly moved into a position just behind the leader, running slightly wider on the track.
ridden to lead over	The jockey started urging the horse, and the horse responded with a surge to take the lead
Furlong	Unit of distance; one furlong is 1/8 of a mile (approx. 200 meters).

Summary

After the start, the horse quickly moved into a position just behind the leader, running slightly wider on the track.
The jockey started urging the horse, and the horse responded with a surge to take the lead
Unit of distance; one furlong is 1/8 of a mile (approx. 200 meters).