Race Comment Explainer

Original comment with matches highlighted:

towards rear, pushed along 7th, dropped to last 2 out, when before last

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.
tailed off	A definitive statement that the horse was finished and effectively out of the race
pulled up	The jockey stopped the horse from continuing

Summary

The jockey started to urge the horse (hand-riding, not necessarily using the whip).
Running near the back of the field.
A definitive statement that the horse was finished and effectively out of the race
The jockey stopped the horse from continuing