Serbia’s Nenad Zimonjic and Poland’s Marcin Matkowski failed to reach the semifinals of Shanghai Masters in the doubles competition.

The No. 3 seeds lost to the South African-Brazilian duo of Raven Klaasen and Marcelo Melo in straight sets 6-2, 6-4 on Friday.

The ATP World Tour Masters 1000 in Shanghai offers a prize fund of USD 7,021,335.