Race Comment Explainer

Original comment with matches highlighted:

held up in touch, pushed along before 10th, detached 3 out,

Matched phrases & meanings

Phrase	Meaning
Pushed along	The jockey started to urge the horse (hand-riding, not necessarily using the whip).
tailed off	A definitive statement that the horse was finished and effectively out of the race
Held up	Intentionally raced patiently at the back to save energy.

Summary

The jockey started to urge the horse (hand-riding, not necessarily using the whip).
A definitive statement that the horse was finished and effectively out of the race
Intentionally raced patiently at the back to save energy.