Race Comment Explainer

Original comment with matches highlighted:

held up towards rear, pushed along after 6th, into 5th last, never involved

Matched phrases & meanings

Phrase	Meaning
Pushed along	The jockey started to urge the horse (hand-riding, not necessarily using the whip).
Towards rear	Running near the back of the field.
Held up	Intentionally raced patiently at the back to save energy.
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 near the back of the field.
Intentionally raced patiently at the back to save energy.
The horse was moving up through the field.