Race Comment Explainer

Original comment with matches highlighted:

held up towards rear, going well, after 2 out, led last, soon in command,

Matched phrases & meanings

Phrase	Meaning
Towards rear	Running near the back of the field.
Held up	Intentionally raced patiently at the back to save energy.
Headway	The horse was moving up through the field.
cosily	The ultimate descriptor: the horse won the race easily, without being pushed to its maximum limit.

Summary

Running near the back of the field.
Intentionally raced patiently at the back to save energy.
The horse was moving up through the field.
The ultimate descriptor: the horse won the race easily, without being pushed to its maximum limit.