Race Comment Explainer

Original comment with matches highlighted:

close up, led over 4f out, ridden and headed inside final , ,

Matched phrases & meanings

Phrase	Meaning
headed inside final	The horse lost the lead very late, within the last
just held	The horse's powerful late run was not quite enough, and it lost the race by the narrowest possible margin (e.g., a nose or short head).
Close up	Running very near the leaders (usually 2nd, 3rd, or 4th).
Kept on	The horse maintained its speed well to the finish.
Furlong	Unit of distance; one furlong is 1/8 of a mile (approx. 200 meters).

Summary

The horse lost the lead very late, within the last
The horse's powerful late run was not quite enough, and it lost the race by the narrowest possible margin (e.g., a nose or short head).
Running very near the leaders (usually 2nd, 3rd, or 4th).
The horse maintained its speed well to the finish.
Unit of distance; one furlong is 1/8 of a mile (approx. 200 meters).