Race Comment Explainer

Original comment with matches highlighted:

led, jumped right 6th, headed 7th, not fluent 8th, ridden before 3 out, soon

Matched phrases & meanings

Phrase	Meaning
ridden before	The jockey started urging the horse aggressively before the second-last obstacle to try and get it back into contention.
not fluent	The horse jumped the tenth fence/hurdle poorly or awkwardly
Weakened	The horse lost speed and dropped back through the field.

Summary

The jockey started urging the horse aggressively before the second-last obstacle to try and get it back into contention.
The horse jumped the tenth fence/hurdle poorly or awkwardly
The horse lost speed and dropped back through the field.