Race Comment Explainer

Original comment with matches highlighted:

midfield, pushed along over 1f out, r finis and chased leaders near finish, for second

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).
Just failed	Narrowly beaten.
Kept on	The horse maintained its speed well to the finish.

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).
Narrowly beaten.
The horse maintained its speed well to the finish.