The promising young guys I’ve seen are Bernard Tomic, Milos Raonic, Grigor Dmitrov, Alex Dolgopolov, and let’s not forget that Del Potro is still only 22. He’ll be 23 in September. These guys could start challenging Djokovic and Nadal (if his body stays together) and whoever else in the next couple of years. Marin Cilic is also just 22, but I think it’s clear at this point that he’s a headcase and is not going to turn in a lot of consistent results. We know what Del Potro has done in the past. He is now ranked #19 and figures to rise even further during the summer hard court season based on how he’s torn it up in recent years. I am not sure he’s all the way back from his injuries yet, but I think he’ll get there and get back to the top. Tomic and Dolgopolov made the quarters in Australia, Raonic made the fourth round in Australia and unfortunately got injured at Wimbledon or he might’ve played Nadal in round three, and Dimitrov lost a very entertaining match to Tsonga in the second round. Dolgopolov is #25, Raonic is #26, and Dmitrov is #60.
If Del Potro is on his game and healthy, he can take on anyone, including Nadal and Djokovic. He’s tall, he’s got a tremendous serve, and he has a well-rounded game. I can’t wait for him to be a contender again.
Oh, and that was the final “Breakfast at Wimbledon” for awhile. Looks like Wimbledon is leaving NBC to be aired entirely on ESPN.
43 years. 
ESPN’s deal will last for the next 12 years. It says it will air matches on ESPN and ESPN2 simulataneously during fourth round and the quarters, and everything they air will be live instead of the famous NBC tape delay. I’m more than happy to do without Breakfast at Wimbledon in exchange for that.
but I don’t have ESPN. alas