Big races, big crowds, and big bets have been associated with Opening Day at Santa Anita Park in Arcadia, CA, for decades. Traditionally opening the day after Christmas, the biggest names in horse racing converge to start the new season. This year, there’s a bit more attention falling on the track from two different industries: entertainment and technology. From the entertainment front, the upcoming HBO series “Luck” starring Dustin Hoffman and Nick Nolte will bring in patrons eager to see where the series, debuting in January, is being shot. Here’s the trailer for season 1: More importantly,…