Race Comment Explainer

Original comment with matches highlighted:

held up in mid-division, pushed along over 3f out, ridden and turning in,

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
Weakened	The horse lost speed and dropped back through the field.
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).
Running in the middle of the pack.
A definitive statement that the horse was finished and effectively out of the race
The horse lost speed and dropped back through the field.
Intentionally raced patiently at the back to save energy.