Race Comment Explainer

Original comment with matches highlighted:

prominent, led 5th, not fluent next, pressed 2 out until last, well, won going away

Matched phrases & meanings

Phrase	Meaning
Won going away	This means the horse was the strongest finisher and, if the race had been longer, the margin of victory would have continued to increase.
not fluent	The horse jumped the tenth fence/hurdle poorly or awkwardly
Stayed on	Continued to finish but without closing the gap significantly.

Summary

This means the horse was the strongest finisher and, if the race had been longer, the margin of victory would have continued to increase.
The horse jumped the tenth fence/hurdle poorly or awkwardly
Continued to finish but without closing the gap significantly.