By Mark Lamport-Stokes LOS ANGELES (Reuters) - Stunned golf fans at the Phoenix Open were left to ponder how the mighty have fallen after Tiger Woods plunged to new depths with the worst score of his professional career in Friday's second round. Looking more like a struggling amateur than the greatest player of his generation, and arguably of all time, Woods was out-of-sorts in every phase of his game as he laboured to a mind-boggling 11-over-par 82 at the TPC Scottsdale. His chipping, in particular, was poor and many pundits are now pointing to Woods, a 14-times major champion once renowned for his magical skills around the green, as being a sufferer of the 'yips' when it comes to that component. Nerves not mechanics." Arron Oberholser, a PGA Tour player who also works as an analyst and commentator for Golf Channel, said: "I think the greatest player that I've ever seen has the yips.