The final major of the year the US PGA Championship starts at Valahalla on Thursday and Open Champion Rory Mc Ilroy is one of the favorites. The World number 1 won the WGC invitational at Bridgestone last week and has been asked if and how he's driving the ball longer and if that’s something he wishes to evolve. Given his recent dominance the Ulster man was also asked if this could be his era and what kind of “zone “ he’s now in when he strikes the ball.