Race Comment Explainer

Original comment with matches highlighted:

mid-division, hit 9th, pushed chasing leaders 3 out, pushed along in 4th before 2 out,

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.
Plugged on	Kept going without showing much pace.
Headway	The horse was moving up through the field.

Summary

The jockey started to urge the horse (hand-riding, not necessarily using the whip).
Running in the middle of the pack.
Kept going without showing much pace.
The horse was moving up through the field.