Race Comment Explainer

Original comment with matches highlighted:

chased leaders, pecked slightly 7th, 3 out, soo 15th, ridden out 3 out, soon led,

Matched phrases & meanings

Phrase	Meaning
Chased leaders	Running directly behind the horses in front of the field.
Ridden out	The jockey encouraged the horse to the finish without the whip, often in an easy win.
Challenged	Attempted to overtake another horse.
not fluent	The horse jumped the tenth fence/hurdle poorly or awkwardly

Summary

Running directly behind the horses in front of the field.
The jockey encouraged the horse to the finish without the whip, often in an easy win.
Attempted to overtake another horse.
The horse jumped the tenth fence/hurdle poorly or awkwardly