Race Comment Explainer

Original comment with matches highlighted:

towards rear, ch befor after 3 out, d off before 2 out,

Matched phrases & meanings

Phrase	Meaning
Towards rear	Running near the back of the field.
tailed off	A definitive statement that the horse was finished and effectively out of the race
lost touch	The horse was struggling severely and the jockey was losing hope
Outpaced	Could not keep up with faster horses mid-race.

Summary

Running near the back of the field.
A definitive statement that the horse was finished and effectively out of the race
The horse was struggling severely and the jockey was losing hope
Could not keep up with faster horses mid-race.