Local trainer Robert Dennis won half of the eight-race card at Ascot Park on Friday, culminating with a special win by Sir Sterling in the Vale Tony Dennis (1400m). The $40,000 race was run a month after the passing of Robert Dennis’ father, the multiple Group One-winning horseman Tony Dennis. “It’s been a terrific day – it’s always great to train any winner, so to get four is hugely rewarding,” Robert Dennis said. “Winning the race named for Dad was a nice cherry on top.” Sir Sterling went into Friday’s…