Race Comment Explainer

Original comment with matches highlighted:

held up efor of mid-division, well behind before 3 out,

Matched phrases & meanings

Phrase	Meaning
Mid-division	Running in the middle of the pack.
tailed off	A definitive statement that the horse was finished and effectively out of the race
Held up	Intentionally raced patiently at the back to save energy.
Rear	Running near the back of the field.

Summary

Running in the middle of the pack.
A definitive statement that the horse was finished and effectively out of the race
Intentionally raced patiently at the back to save energy.
Running near the back of the field.