By Matt Cronin BOISE, Idaho Apr 6, 2013 (Reuters) - In a shock of the world's number one doubles team, the patchwork duo of Nenad Zimonjic and Ilija Bozoljac overcame the United States' Bob and Mike Bryan 7-6 7-6 5-7 4-6 15-13 to give Serbia a 2-1 lead in the Davis Cup quarter finals.