Race Comment Explainer

Original comment with matches highlighted:

mid-division, den bef approaching 3 out, ridden before next, last

Matched phrases & meanings

Phrase	Meaning
ridden before	The jockey started urging the horse aggressively before the second-last obstacle to try and get it back into contention.
Mid-division	Running in the middle of the pack.
No extra	Did not improve or accelerate when asked.
Headway	The horse was moving up through the field.

Summary

The jockey started urging the horse aggressively before the second-last obstacle to try and get it back into contention.
Running in the middle of the pack.
Did not improve or accelerate when asked.
The horse was moving up through the field.