Race Comment Explainer

Original comment with matches highlighted:

mid-division, chased leaders 5th, no impressi on run to last, no impression and

Matched phrases & meanings

Phrase	Meaning
Chased leaders	Running directly behind the horses in front of the field.
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.
Weakened	The horse lost speed and dropped back through the field.

Summary

Running directly behind the horses in front of the field.
The jockey started to urge the horse (hand-riding, not necessarily using the whip).
Running in the middle of the pack.
The horse lost speed and dropped back through the field.