Keothavong had managed a confidence-boosting three set win over world number 41 Jarmila Groth the day before, but couldn't repeat her efforts on Wednesday.

BBC: Anne Keothavong

Serena had made hard work of beating another Russian, Vera Dushevina, in a three-set opener on Monday, but appeared in command against world number 18 Petrova as she won the first set.

CNN: Serena loses but Venus rises after Madrid win

His 263-yard three-wood approach to the 18th "the perfect number for me" set up his superb finish.

CNN: STORY HIGHLIGHTS

Slovak number seven seed Daniela Hantuchova was defeated in a three-set marathon with Spaniard Arantxa Parra Santonja 6-4 6-7(7-3) 7-6 (7-5).

BBC: SPORT | Tennis | Molik, Baltacha crash out of DFS

The Danish world number one broke her error-prone Russian opponent three times in each set to triumph 6-1 6-2.

BBC: Caroline Wozniacki

Amla was unfortunate to be given out - Daryl Harper rose his finger despite Pattinson's delivery looking set to miss leg stump - but the number three was delighted with how day two turned out for South Africa.

BBC: Moores upbeat on England chances

Eleventh seed Gonzalez of Chile and number three seed Nadal of Spain were in their 2nd straight tie-breaking set, with Nadal leading 7-6 (7-4), 6-6 (3-2) when play was suspended.

CNN: Del Potro reaches his first U.S. Open semis

The gifted number 10 converted all three scores and set up Sackey for the fourth try with an inch-perfect cross-kick.

BBC: Saracens 29-40 Wasps

Williams secured an early break in the first game of the first set before Bartoli pegged her back but the number three seed closed out the opener 6-3.

CNN: Venus beats Bartoli to seal Miami final berth

The three-set 6-4 3-6 6-3 victory also assures Serena of keeping the world number one spot ahead of Russian Dinara Safina.

CNN: Serena beats Venus to reach Miami final