Curlin's Approval will have her work cut out going up against Lewis Bay in Monday's Grade 2 Royal Delta but she couldn't be going into the race doing any better, putting the finishing touches on a strong series of works by blowing out an easy as can be three furlongs in 35.91 seconds with jockey Edgard Zayas aboard late Thursday morning at Gulfstream Park.  Curlin's Approval, the defending Royal Delta champ, will be trying to avenge her 1 1/4 length setback behind Lewis Bay in the Grade 3 Rampart here in December.