I'm doing a prelim here using Contessa as the example.
He won on 5/23 going 1M at 20K claimer and won and paid about 20.00, the horse had been claimed 5/1/14 from D. Jacobson for 12.5K after running 5th that race. The horse is back in today (8 days later) going a mile for 16K.
His horse Regulus ran on 5/17/14 6f at 40K claimers. He returned 7 days later on 524/14 and won a 7f for 25K.
He won on 5/29/14 with Ode to Sami after taking over the horse from Tony Pecoraro at Lrl on 10/14/13 or so.
I don't see any designation in any of the racing past performances that I use, nor is there anything on the result charts prior to or after a race with the strip on.
Only place I see a designation "y" is Golden Gate and I don't even know what "y" is a symbol for.
Other than the Belmont Stakes, I can't play the NY circuit unless and until they can denote that info "before" the fact. My exceptions might be on a horse taken over by Contessa after the date the strips were being allowed. But, still just a guess at that point.
What a cluster...