Race Comment Explainer

Original comment with matches highlighted:

held up in 1f , ridden with plenty to do over 1f out, late into 4th, just missed 3rd

Matched phrases & meanings

Phrase	Meaning
plenty to do	The horse is positioned far behind the leaders, has a lot of ground to make up, or is blocked by traffic.
Held up	Intentionally raced patiently at the back to save energy.
Headway	The horse was moving up through the field.
Rear	Running near the back of the field.

Summary

The horse is positioned far behind the leaders, has a lot of ground to make up, or is blocked by traffic.
Intentionally raced patiently at the back to save energy.
The horse was moving up through the field.
Running near the back of the field.