"The medical team's done a good job - they strapped it up and I only really noticed it for the last five holes," he said.
Martin has tasted success before, winning the Australian Amateur Championships in 2004 but he is yet to win a tournament since turning pro in 2006.
However, he has had several top-five finishes in events on the PGA Tour of Australasia, including a second placing in late February at the Queensland PGA Championship in Toowoomba.
He said that gave him plenty of confidence for this event
"Toowoomba was a big eye-opener that my game was there. I hit the shots I wanted to hit and just fell short with a couple of putts."
Martin is looking forward to the new celebrity pro-am format for the final two rounds at The Hills.
He said playing alongside an amateur over the weekend will be a welcome distraction.
"Bringing a bit of the pro-am stuff in is a bit more relaxed. It's also good having my girlfriend Rachel on the bag - it's only her first couple of times caddying so I'm worrying about her going in the right spots."
A win in Arrowtown would set Martin up for the year and he has his eye on US PGA Tour School in September but is also conscious of earning enough money to retain his card on the PGA Tour of Australasia.
"If I can have enough money up or a win before September, that just frees me up so I can focus on Tour School."
Martin wasn't the only player tearing up the course on day two as South Korean Jin Jeong stormed into the top 10 at six-under par with a sensational 10-under-par 62.
He now shares the course record with Australian Peter Fowler who set the benchmark at the Michael Hill New Zealand Open in 2007.
Australian Andrew Kelly also got in on the act with the two best shots of the day.
Kelly holed out with an eight iron from the fairway for an eagle at the par four sixth hole and then upstaged himself with an ace at the par three 10th.
Sadly for the 24-year-old Victorian, the hole-in-one prize of a brand new car only applies at the weekend.
The 62 professionals who have made the cut will now be paired up with an amateur for the third round tomorrow, as the tournament enters the new celebrity Pro-Am format for the first time in its history.