World number one Serena Williams inflicted swift revenge on behalf of her older sister when she beat Britain's Laura Robson 6-2 6-2 in the Rome Masters on Tuesday.
Venus Williams was despatched in straight sets by Robson in Monday's first round but Serena, fresh from her defeat of Maria Sharapova in the Madrid Open final at the weekend, was a different proposition once she had warmed up.
Robson broke serve in the opening game but the American quickly hit her stride to take the first set. Robson battled hard early in the second to reach 2-2 but then folded in the face of Williams' power and placement.
Robson's second service was picked apart by Williams and the Briton did her chances no good with eight double faults.
"It was a good match - she played really well and really smart," said Wiliams. "She's just a great player and I think she has such a big future...
"I've played lots of matches, but I'm the kind of player who likes to keep playing matches, at least now in my career," Williams said of her current 20-match winning streak. "I just want to keep the confidence there."
Despite being handed a tennis lesson, 19-year-old Robson said she wanted to play Williams again soon.
"She's number one in the world for a reason. She played really well today (and) didn't give me many opportunities," Robson said on the official Tour website (www.wtatennis.com).
"I thought it could have been a little bit closer - I had some break points I didn't take advantage of - but it was a learning experience and hopefully I'll play her again soon."
South Africa's Kevin Anderson removed Marin Cilic, the 11th seed, 6-3 7-6 also in the second round while 12th seed Nicolas Almagro and Tommy Haas (13) went out in opening-round matches.
Also in the women's draw Caroline Wozniacki, seeded 10, and 15th seed Ana Ivanovic failed to clear the first round.
Wozniacki led 4-0 in the third set against Bojana Jovanovski and served for the match at 5-4 but her Serbian opponent, who had lost her last eight matches before this, fought back to claim the second top-10 scalp of her career.
Fourth seed Agnieszka Radwanska of Poland took the first set in her second-round match with Romania's Simona Halep but won just three games in the next two to go down 6-7 6-1 6-2. Her sister, Urszula, had a better day, beating Ivanovic 6-3 2-6 6-2.