Race Comment Explainer

Original comment with matches highlighted:

mid-division, ers bef on inside chasing leaders before 4 out, quickly

Matched phrases & meanings

Phrase	Meaning
Mid-division	Running in the middle of the pack.
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.
Weakened	The horse lost speed and dropped back through the field.
Headway	The horse was moving up through the field.

Summary

Running in the middle of the pack.
This is the final bend or corner of the track, just before the horses enter the final straight run to the finish line.
The horse lost speed and dropped back through the field.
The horse was moving up through the field.