Race Comment Explainer

Original comment with matches highlighted:

tracked leaders, ning in, rid and nal 2f turning in, ridden and into 4th inside final 2f

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.
Headway	The horse was moving up through the field.

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.
The horse was moving up through the field.