World No. 1 Novak Djokovic will once again lead Serbia into battle having been nominated to play in the World Group quarterfinal against USA on 5-7 April.
The Serbian was the first name on captain Bogdan Obradovic's list and he will be backed up by Viktor Troicki in singles, who is likely to team up with Nenad Zimonjic in doubles. The fourth member of the Serbian side is No. 338 Ilija Bozoljac.
The 2010 champions are travelling to Boise in Idaho to play USA - historically the most successful Davis Cup nation - and they will have to contend with some big serves as captain Jim Courier has put forward a powerful line-up.
The new American No. 1 Sam Querrey will lead the home side and he will have support from one of the tallest men on tour, John Isner. There is little doubt as to who will be playing in the doubles rubber on Saturday as the deadly duo of Bob and Mike Bryan will be making their 25th and 26th appearances respectively.
In what is sure to be one of the most closely contested ties of the weekend, both Argentina and France have named unchanged teams from those that won comfortably in February's first round.
Argentina will look to Juan Monaco to spearhead the home attack, with either Carlos Berlocq or Horacio Zeballos playing as No. 2 and David Nalbandian anchoring the doubles team.
The French team features two Top 10 players in Jo-Wilfred Tsonga and Richard Gasquet with Julien Benneteau and Michael Llodra the likely doubles partnership.
In Astana, hosts Kazakhstan have also named an unchanged team to take on the defending champions Czech Republic. Mikhail Kukushkin is the highest-ranked of the Kazakh team and will be looking to impress on his comeback from hip surgery.
He will have back-up from Andrey Golubev, Evgeny Korolev and Yuriy Schukin. Last year's champions originally nominated their tried and tested duo of Tomas Berdych and Radek Stepanek, before the latter was forced to pull out with a shoulder injury, to later be replaced by Ivo Minar.
The Czechs have yet to name a replacement for Berdych, but the line-up is completed by Lukas Rosol and Jan Hajek.
Full nominations can be found below:
Canada v Italy
Venue: Thunderbird Sports Centre
Location: Vancouver, Canada
Surface: Indoor hard
Martin Laurendeau (captain)
Corrado Barazzutti (captain)
USA v Serbia
Venue: Taco Bell Arena
Location: Boise, Idaho, USA
Surface: Indoor hard
Jim Courier (captain)
Bogdan Obradovic (captain)
Argentina v France
Venue: Parque Roque
Location: Buenos Aires, Argentina
Surface: Outdoor clay
Martin Jaite (captain)
Arnaud Clement (captain)
Kazakhstan v Czech Republic
Venue: National Tennis Centre
Location: Astana, Kazakhstan
Surface: Indoor clay
Dias Doskarayev (captain)
Jaroslav Navratil (captain)