Race Comment Explainer

Original comment with matches highlighted:

chased leaders, ridden and unable to quicken over 1f out, went moderate 4th inside final

Matched phrases & meanings

Phrase	Meaning
ridden and unable to quicken over	This is the crucial negative point the horse lacked the necessary finishing speed.
Chased leaders	Running directly behind the horses in front of the field.
Furlong	Unit of distance; one furlong is 1/8 of a mile (approx. 200 meters).

Summary

This is the crucial negative point the horse lacked the necessary finishing speed.
Running directly behind the horses in front of the field.
Unit of distance; one furlong is 1/8 of a mile (approx. 200 meters).