The top 5 from the Davis Cup quarterfinals

Nick Kyrgios
The 20-year-old led Australia in beating the US, knocking out the vets John Isner and Sam Querrey. He is much more comfortable in the Davis Cup than on the ATP World Tour, being aggressive and smart. The Aussies could actually win it all this year, but they need to bring back Bernard Tomic to help them. If he is actually playing, that is.  

David Goffin
The Belgium plays Davis Cup all the time, year after year. They beat Italy 3-1 Given that Goffin has improved a lot recently, maybe they can upset Australia at home and actually reach the final. Perhaps, if he can kiss the lines in September, that is.

Viktor Troicki
Yes, Novak Djokovic won his match, but Troicki was confident in singles and doubles. They whipped Spain. If the No. 2 Djokovic decides not to play right after the US Open ends, then Serbia has no chance to win the Cup again. They do not have enough great players to prevail without him.

All the French
The top 3 men couldn’t play because of injury, so France brought in a bunch of fine competitors. France has so much depth. Four players cracked England: Lucas Pouille, Jeremy Chardy, Julien Benneteau and Nicolas Mahut.

Lleyton Hewitt
The new captain was pretty brilliant, upsetting the Americans by helping Nick Kyrgios and Jordan Thompson. They were super solid, just like Lleyton was when he played, year-in and year-out.