Illinois has 2 (Petry and Burge)
UVA has 2 (McCarthy and Derek Bard), although I think McCarthy might have graduated and is staying an am in the hopes he gets a Walker Cup spot.
There are still 5 Walker Cup spots up for grabs, with 2 of them going to mid-ams. The prevailing sentiment is that 2 of the 3 spots not held for mid-ams are going to Robby Shelton and Jordan Niebrugge. That leaves one spot, which could go to McCarthy if there isn't a surprise American winner of the US Am. I think the 2 mid-ams are going to be Nathan Smith and Scott Harvey.