Race Comment Explainer

Original comment with matches highlighted:

chased leaders, on to go seco 2 out, to go second run in

Matched phrases & meanings

Phrase	Meaning
Chased leaders	Running directly behind the horses in front of the field.
ridden before	The jockey started urging the horse aggressively before the second-last obstacle to try and get it back into contention.
Stayed on	Continued to finish but without closing the gap significantly.

Summary

Running directly behind the horses in front of the field.
The jockey started urging the horse aggressively before the second-last obstacle to try and get it back into contention.
Continued to finish but without closing the gap significantly.