Stuttgart (Germany): Fourth seeds Rohan Bopanna and Florin Mergea of Romania had to sweat it out to register a three-set win over Marcin Matkowski and Nenad Zimonjic and enter the final of the ATP Mercedes Cup, here.

The Indo-Romanian pair fought hard for nearly one hour and 12 minutes to eke out a 6-3 6-7(6) 10-7 over the second
seeded Polish-Serbian combination win in the super tie-breaker last night to secure their place in the summit clash.