Race Comment Explainer

Original comment with matches highlighted:

chased leaders, went 2nd 4 out, led ed, not f and quickly asserted, 2 out, easily

Matched phrases & meanings

Phrase	Meaning
Chased leaders	Running directly behind the horses in front of the field.
not fluent	The horse jumped the tenth fence/hurdle poorly or awkwardly
home turn	This is the final bend or corner of the track, just before the horses enter the final straight run to the finish line.

Summary

Running directly behind the horses in front of the field.
The horse jumped the tenth fence/hurdle poorly or awkwardly
This is the final bend or corner of the track, just before the horses enter the final straight run to the finish line.