Todd, who first gained access to the PGA Tour in 2009 following a stellar season on the then Nationwide Tour in 2008, has been back and forward between tours winning the Qualifying in one of those years to regain access.
In 2014 however Todd has missed only two cuts in 14 starts and has created an excellent opportunity for that breakthrough win.
Todd leads by two over a large group at 6 under namely Canadians Graeme DeLaet and Mike Weir, last week's winner Martin Kaymer, England's Paul Casey, Tim Herron, Charles Howell and Australia's Marc Leishman.
Leishman has regularly played well at this venue and put together a good tournament last week and it is therefore no real surprise that he is contending.
One of the pre tournament favourites Matt Kuchar is in a share of 15th position and four shots from the lead while the other player considered a key contender, Jordan Spieth improved sharply on day two with a second round of 67 to be fives shots from Todd.
Other Australasians to make the cut include Tim Wilkinson 19th, Aaron Baddeley and Greg Chalmers 25th, Scott Gardiner, 41st, John Senden and Rod Pampling 52nd and Robert Allenby 67th.