▁rac etra cks . ▁ ▁In ▁ 1 9 7 1 ▁he ▁launched ▁Roberts ▁Television ▁International ▁and ▁introduced ▁broadcast ▁synd ic ation ▁of ▁major ▁sports ▁and ▁entertain ment ▁programming . ▁He ▁purchased ▁the ▁rights ▁to ▁tele cast ▁La ure l ▁Park ' s ▁signature ▁race , ▁The ▁Washington ▁D . C . ▁International ▁St akes . ▁Roberts ▁produced ▁the ▁program ▁and ▁called ▁the ▁race . ▁His ▁company , ▁Independent ▁Television ▁Network , ▁made ▁agre ements ▁with ▁ 1 1 4 ▁stations ▁across ▁the ▁country , ▁along ▁with ▁out lets ▁in ▁seven ▁foreign ▁countries ▁to ▁tele cast ▁the ▁event . ▁ ▁In ▁ 1 9 7 3 ▁Roberts ▁was ▁the ▁race ▁caller ▁for ▁Secret ariat ' s ▁Tri ple ▁Crown ▁of ▁Thor ough bre d ▁Racing ▁ ▁series ▁on ▁ 8 0 0 ▁mut ual ▁radio ▁network ▁stations ▁across ▁the ▁country . ▁Later , ▁he ▁produced ▁and ▁hosted ▁a ▁series ▁of ▁tele vised ▁races ▁from ▁Aqu ed uct ▁Race ▁Track . ▁ ▁In ▁ 1 9 7 6 ▁Roberts ▁was ▁appointed ▁vice ▁president ▁and ▁general ▁manager ▁of ▁H iale ah ▁Park . ▁In ▁his ▁three ▁years ▁at ▁the ▁track ▁he ▁introduced ▁an ▁advance - de pos it ▁w ager ing ▁system ▁allowing ▁bet ting ▁to ▁be ▁conducted ▁over ▁the ▁tele phone . ▁ ▁Sim ul cast ing ▁in ▁horse ▁racing ▁ ▁In ▁ 1 9 8 3 ▁Roberts ▁created ▁the ▁first ▁horse ▁racing ▁sim ul cast , ▁after ▁bu ying ▁the ▁rights ▁to ▁feed ▁live ▁races ▁via ▁satellite ▁from ▁ 3 0 ▁rac etra