It's that time of year again. Davis Cup is a unique event on the tennis calendar. Both from the setup (a team tournament that stretches throughout the year) to the atmosphere (you never see such outright home cheering anywhere else), Davis Cup is a can't-miss tournament.

Of course, the nature of it means that some of the top players are not always involved. For example, both Roger Federer and Stanislas Wawrinka have chosen not to compete for Switzerland this year. Among other things, this means that last year's champions will need a minor miracle to even make it out of the first round against Belgium.

But there are some incredible matchups to keep an eye on this weekend. First and foremost, the United States and Great Britain will meet. While the two countries are the winningest in Davis Cup history, both have struggled in recent years. Still, Donald Young's rise means that we could be in for a fascinating tie if Andy Murray can win both of his singles rubbers. This is probably going to be the Sunday set of matches you don't want to miss.

Serbia vs Croatia is not going to be a tight match on paper but will be a huge opportunity for Borna Coric to take his place on the national stage. He brought his country to the World Group last year with his upset of Jerzy Janowicz but will need to have a very special weekend to get them farther this year. This tie also has a bit of politics to it as it is between neighboring countries that share a language–so bragging rights mean a bit more. 

There are more top-level ties to keep an eye on, including a Canada/Japan matchup that includes two top-10 players. Australia visits the Czech Republic in what many fear could be the end of Lleyton Hewitt's Davis Cup career (as a player, at least) if the Aussies lose. And don't miss the meeting between Germany and France, since both teams contain several top-50 players and could provide some exciting matchups. 

And just as a follow-up to last week's article, David Ferrer won the ATP 500 tournament in Acapulco last week in impressive style, beating Kei Nishikori in the final after five straight losses to the Japanese player. We will find out if he can have any success against the likes of Djokovic and Rafael Nadal once we get to clay, but things are looking even more in the right direction for him.