Race Comment Explainer

Original comment with matches highlighted:

held up in n dr, pushed along over 2f out, soon drifted left, inside final

Matched phrases & meanings

Phrase	Meaning
Pushed along	The jockey started to urge the horse (hand-riding, not necessarily using the whip).
Weakened	The horse lost speed and dropped back through the field.
Held up	Intentionally raced patiently at the back to save energy.
Furlong	Unit of distance; one furlong is 1/8 of a mile (approx. 200 meters).
Rear	Running near the back of the field.

Summary

The jockey started to urge the horse (hand-riding, not necessarily using the whip).
The horse lost speed and dropped back through the field.
Intentionally raced patiently at the back to save energy.
Unit of distance; one furlong is 1/8 of a mile (approx. 200 meters).
Running near the back of the field.