Tway defeated Spencer Levin in a playoff last year and has thrown out signals of late that a successful defence is not beyond him.
Now playing the PGA Tour, Tway has struggled for much of this season but there have been encouraging signs of late in both Hartford and last week at the John Deere Classic.
Australasians Steve Alker, Steve Allan, Gavin Coles, Adam Crawford, Mathew Goggin, Nathan Green, Ashley Hall, James Nitties, Nick O'Hern, Rod Pampling, Cameron Percy and Aron Price, are in the field.
Steve Alker currently leads the Australasians on the Web.Com Tour money list. Alker is 17th, Cameron Percy 28th, Alistair Presnell 30th, Rod Pampling 36th, Ashley Hall and Steve Allan 49th, the only ones to date inside the top fifty.