KEY BISCAYNE, Fla. -- Serena Williams kept swinging on the final point, and Caroline Wozniacki kept chasing the ball down, running from side to side in a grueling, grunt-filled exchange.
A weary Williams finally hit one where her relentless opponent couldn't reach it: into the net. With that, Wozniacki had a 6-4, 6-4 victory Tuesday night, and a berth in the Key Biscayne semifinals for the first time.
"I made her run," Wozniacki said.
"Everyone I play always plays the ...