Race Comment Explainer

Original comment with matches highlighted:

prominent, not fluent 4th, pushed along before 2 out, soon , kept on one pace run-in

Matched phrases & meanings

Phrase	Meaning
kept on one pace run-in	The horse maintained its existing speed through the final run to the finish line, but could not accelerate or quicken relative to the leader.
Pushed along	The jockey started to urge the horse (hand-riding, not necessarily using the whip).
not fluent	The horse jumped the tenth fence/hurdle poorly or awkwardly
Outpaced	Could not keep up with faster horses mid-race.

Summary

The horse maintained its existing speed through the final run to the finish line, but could not accelerate or quicken relative to the leader.
The jockey started to urge the horse (hand-riding, not necessarily using the whip).
The horse jumped the tenth fence/hurdle poorly or awkwardly
Could not keep up with faster horses mid-race.