Serena Williams swept to her second clinical win since returning from injury as she reached the quarter-finals of the Cincinnati Open.
Williams is starting to look like her old self
The 24-year-old earned a 6-3 6-1 victory over Bethanie Mattek to follow up her straight sets win over Anastasia Myskina on Tuesday.
Williams, who took just 63 minutes to win, missed six months of tennis with a knee injury.
"I feel like I'm moving faster but I can still get quicker," said Williams.
"I feel fine, I've been doing a lot of off court work. Both players I have played so far have been really competitive and really tough.
"I'm just taking it one match at a time.
"I didn't expect super-spectacular results, but I didn't expect bad results, either. I'm not looking too far ahead."
Meanwhile, the US Tennis Association has confirmed that it will give Williams a wild card for the US Open if necessary.
Williams, who won the event in 1999 and 2002, has entered this year's tournament but her injury-affected world ranking of 139 means she will not receive automatic direct acceptance.
In addition to the players already in the draw, 16 players will gain entry through qualifying, while the remaining eight spots are wild cards awarded at the discretion of the USTA.