Sponsored players in action last weekend included:
• Novak Djokovic, who helped Serbia emerge victorious against Croatia.
The world number one defeated Mate Delic 6-3, 6-2, 6-4, hitting 34 winners and breaking four times while never facing a break point against his own serve.
“Playing for your country gives a different feel from other events,” Djokovic said.
“We don’t get this pressure too often during the season.
“I was very much aware of my opponent’s quality.
“I’m happy with my performance.”
Djokovic and fellow Head player Nenad Zimonjic posted a 6-3, 6-4, 6-1 victory over Croatian’s Marin Draganja and Franko Skugor to clinch the tie.
• In Glasgow, Andy Murray beat American John Isner 7-6, 6-3, 7-6 to ensure Britain took its place in a second consecutive world group quarter-final via a 3-1 scoreline.
“To be in the quarter-finals for the second time is a credit to everyone,” Murray said.
• In Frankfurt, Gilles Simon earned France the first point of a 3-2 win as he beat German Jan-Lennard Struff 7-6, 2-6, 6-7, 6-2, 10-8 in a match that took almost four and a half hours to complete.
• Bernard Tomic assured Australia of a first quarter-final in nine years after beating the Czech Republic 3-2, winning both of his singles matches in straight sets.
The Aussie defeated Jiri Vesely 6-4, 6-3, 7-6 and claimed the tie-winning point by beating Lukas Rosol 7-6, 6-3, 7-6.
• In Astana, Mikhail Kukushkin and Andrey Golobev starred as Kazakhstan beat Italy 3-2.