Phase 1 TPR lessons

[Mark]

I have always wondered what to do about horse who in their last start had: 1. serious commented trouble making the race useless for evaluation purposes, 2. had one or two races off a layoff particularly one race off up to 120 days or so with good works before and after or 2 races off a substantial layoff generally over 200 days or 3. raced on the wrong surface or at the opposite distance structure?
Any substitute race will be older and not necessarily meet the requirement of the "Last Line".