Andy Roddick took another step towards defending his Brisbane International tennis title by beating fifth seeded Cypriot Marcos Baghdatis in the quarter-finals on Thursday.
Roddick, seeded second, was in imperious form as he defeated crowd favourite Baghdatis 6-2, 6-3, to record his eighth straight win at the Pat Rafter Arena.
Although the American was in total control throughout, he was helped by an out of sorts Baghdatis, who made under 40 per cent of his first serves and gave away numerous points through unforced errors.
Roddick will face unseeded South African Kevin Anderson in the semi-finals following the big-serving Anderson's gutsy win over Colombian Santiago Giraldo.
Anderson took a shade under two hours to beat Giraldo 2-6, 6-3, 6-4, blasting down 12 aces to add to the 33 he served in the first two rounds.
Roddick has served 27 aces over three rounds.
"It will be a little bit of a crap shoot, I feel it will be less about form," Roddick said.
"It's going to come down to the break point you get, or if you can get a second serve.
"Obviously if I can get the ball in play against him the more comfortable I'll feel," he added.
"The thing about a serve like (Anderson's) is you're not going to see a lot of balls, you can go through whole games without seeing the ball, so it does affect rhythm a little bit."
Earlier, top seeded Swede Robin Soderling moved into the quarter-finals but had to fight hard to see off tenacious German Michael Berrer.
The Swede, runner up at Roland Garros for the past two years, broke Berrer once in the first set before being taken to a tiebreak in the second, eventually winning 6-3, 7-6 (9/7).
World No.58 Berrer played above his ranking to push the top seed throughout the one hour 35 minute encounter, but Soderling was just able to sneak home, thanks largely to the power and accuracy of his booming first serve.
"It was tough today -- it was two sets but they were both very close," a relieved Soderling said later.
"I had to save some break points in the first set and the second was also close, so I was lucky to win in two.
"It's good to have some tough matches (early in the season) but I'm glad I won in straight sets."
Soderling will now play unheralded Matthew Ebden in the quarter-finals after the unheralded Australian qualifier shocked eighth seed Denis Istomin of Uzbekistan.
Ebden broke Istomin early in both sets and held his nerve to record what he later called the best win of his career.