For 85 years already, surf and turf have been kissing cousins at Del Mar, and Friday anoints the latest rekindling of that summer fling at the SoCal seaside venue. To discuss the meet--which runs through Sept. 11--the TDN sat down with Josh Rubinstein, president of the Del Mar Thoroughbred Club, who spoke field size, purse bonuses, stabling and a certain high-flying trainee. The following has been edited for brevity and clarity. TDN: Opening day is Friday with a sold-out crowd and an impressive average field size of 11 horses per-race....