Race Comment Explainer

Original comment with matches highlighted:

mid-division, dropped to furl and pushed along after 5 s, behind thereafter

Matched phrases & meanings

Phrase	Meaning
Pushed along	The jockey started to urge the horse (hand-riding, not necessarily using the whip).
Mid-division	Running in the middle of the pack.
Furlong	Unit of distance; one furlong is 1/8 of a mile (approx. 200 meters).
Rear	Running near the back of the field.

Summary

The jockey started to urge the horse (hand-riding, not necessarily using the whip).
Running in the middle of the pack.
Unit of distance; one furlong is 1/8 of a mile (approx. 200 meters).
Running near the back of the field.