At 4-3, 40-30, Federer hit a 118 miles per hour ace to hold and start his roll that included the last five points he served in the first set, all 20 in the second, and then the first 10 of the third. He won 35 straight service points in his second round match against Lukas Lacko and at one point, each of Fed's service games was averaging little more than a minute.
In total, the eight-time champion lost just nine of 61 points on his serve and broke Lacko five times, including with a forehand victor to close out the match. The 36-year-old made quick work of Lukas Lacko, winning 6-4, 6-4, 6-1 in a match that saw the Swiss make only 11 errors.
And speaking of Wimbledon greats, Serena will also be playing her third round match Friday against Mladenovic.
Federer's match was similarly straightforward.
It was a bitter defeat for the 27-year-old Dane, who was expected to challenge for the Wimbledon title after winning her maiden Grand Slam crown at the Australian Open in January. Williams had only played three tournaments before this one since becoming a mother, but the seven-time champion played as if she were nearly annoyed she wasn't considered the favorite this year.
Belgium beats England 1-0, moves into tougher side of draw
Belgium fan Mark Moors, 50, from Brussels, said he agreed with his national team's manager and preferred a draw with England . Rules in the Knockout Stages: The FIFA World Cup 2018 group stages are over with England's 1-0 defeat to Belgium .
"I think I did everything I could", Wozniacki said.
There was a shock in the women's singles as second seed Caroline Wozniacki was knocked out after losing 6-4, 1-6, 7-5 to unseeded Ekaterina Makarova.
"It wasn't so hard for me, I have experienced it many times - the crowd were really nice to me".
The final set took just 25 minutes, the first lasting 37 minutes and the second just 28 minutes.
Sister Venus, a five-time champion, lost the first set but fought back to beat Romanian qualifier Alexandra Dulgheru 4-6 6-0 6-1.
Wimbledon -- Men's third-round matches
Monfils is another fourth round debutant after he knocked out last year's semi-finalist Sam Querrey 5-7 6-4 6-4 6-2. Nadal had fallen to a player ranked outside the top 100 in four of his last five visits to the All England Club.
The 20-time Grand Slam champion, who has not dropped a set since the 2016 semi-finals, will have his returning game tested by a player whom he defeated 6-4 6-4 7-6 at this year's Australian Open.
"Also I was excited to wear Uniqlo today". She was on a roll, but happily not against me.
Wozniacki's exit means only world number one Simona Halep, defending champion Garbine Muguruza and seventh seed Karolina Pliskova remain from the top eight in the women's draw.
The Swiss then opted to skip the clay-court season to prepare himself for this year's Wimbledon, where he has already progressed to the second round after brushing aside Serbian Dusan Lajovic, 6-1 6-3 6-4 in just 79 minutes. "Is there a spray?" she said.
Suarez: Uruguay can cope without Cavani
Portugal have progressed from the group stage of the World Cup for the fourth time in their history. Although the "new generation" lost, the emotional Santos insisted that they "played a good game".