Race Comment Explainer

Original comment with matches highlighted:

rear mid-division, pushed along and 10th,

Matched phrases & meanings

Phrase	Meaning
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.
tailed off	A definitive statement that the horse was finished and effectively out of the race
lost touch	The horse was struggling severely and the jockey was losing hope
Rear	Running near the back of the field.

Summary

The jockey started to urge the horse (hand-riding, not necessarily using the whip).
Running in the middle of the pack.
A definitive statement that the horse was finished and effectively out of the race
The horse was struggling severely and the jockey was losing hope
Running near the back of the field.