Race Comment Explainer

Original comment with matches highlighted:

tracked leaders, d final furl 2f out, final

Matched phrases & meanings

Phrase	Meaning
Tracked leader	Followed closely behind the leaders.
Pushed along	The jockey started to urge the horse (hand-riding, not necessarily using the whip).
Weakened	The horse lost speed and dropped back through the field.
Furlong	Unit of distance; one furlong is 1/8 of a mile (approx. 200 meters).

Summary

Followed closely behind the leaders.
The jockey started to urge the horse (hand-riding, not necessarily using the whip).
The horse lost speed and dropped back through the field.
Unit of distance; one furlong is 1/8 of a mile (approx. 200 meters).