By Ian Ransom MELBOURNE (Reuters) - Adam Scott rued a horror third round that all but ended his hope of a third Australian Masters title and will head into next week's Australian Open spoiling for a fight against world number one Jordan Spieth. Tour veteran Peter Senior celebrated a richly deserved two-stroke win at Huntingdale Golf Club on Sunday but the trophy was virtually gift-wrapped for former world number one Scott halfway through his second round. With his driver, irons and putter all misbehaving, Scott fell back into a share of the lead after the second round and crashed during the third with a six-over 77. More...