Call you shots guys!
Not sure who TOMO will be using, but I think he has to be the guy to beat. He is consistent, can risk well, moves great and making up for lack of creativity with wall like defense. Not many players on tour can challenge him in best of 5, let alone walk away victorious. I can see 3 clear candidates for such upsets, and they are:
alex13090 - has probably the most complete game out there. Playing him is like playing myself, and after a few matches, I realized that I can't beat myself.
coke4 - has a great baseline game, can stay in points with anyone, but what really sets him apart is great serving and most importantly, transition volleys. If Coke can find his rhythm at the net, he can be the guy on the top. Playing against TOMO, it so important to end the points quick and have as many free points as possible. Coke is the man here.
Josenylund - risk taker, a smart risk taker, as very successful risk taker. Knows when to go for his shots and does it often. Great court sense as - making him a good defender as well. When his down the line risk is "on", it becomes extremely tough to find an open spot on the court, he covers it oh so well.
As far as later rounds of a major, there are at least 20 players in the draw that can realistically get to QF or better. Yes, the SIM tour is that deep and unpredictable. If I have to name a few, then I'll start with (in no particular order) petrelli83, he recently lost a few close matches and will be prime for a break thru comes AO. He will be seeded 10th or so, so he will have to deal with one of the great new comers in first rounds, which brings me to marlonbrando91. Had a pleasure to play a set against him and I believe he will shape into a QF presents very shortly. Lonamer is world class and Wimbledon winner is unseeded, so good luck to whoever gets him in first round. There are too many names to mention, these are just a few of the excellent players we have and since the draw is not out yet, this is meant to be a general observation of some contenders and new arrivals on the tour.
Chip in!
Have a good Draw and good Luck!