Rickie Fowler takes slim lead into final day of PGA Championship . Austrian Open winner holds one shot advantage over Louisville 's Bernd Wiesberger . `` I knew there were guys ahead of me making birdies and it gives me a lot of confidence knowing that if I get challenged and people put the pressure on I am able to respond Jason Day , Phil Mickelson and Phil Mickelson all in chasing pack .
Rickie Fowler takes slim lead into final day of PGA Championship . Austrian Open winner holds one shot advantage over Louisville 's Bernd Wiesberger . Jason Day , Phil Mickelson and Phil Mickelson all in chasing pack .