Race Comment Explainer

Original comment with matches highlighted:

held up in e 15, not fluent 11th, ridden before 15th, before 2 out, no impression run-in

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
Outpaced	Could not keep up with faster horses mid-race.
Held up	Intentionally raced patiently at the back to save energy.
Rear	Running near the back of 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
Could not keep up with faster horses mid-race.
Intentionally raced patiently at the back to save energy.
Running near the back of the field.