Basel - Roger Federer crushed Radu Albot 6-0, 6-3 on Wednesday to win his 22nd match in a row at the Swiss Indoors and earn a quarter-final place at his home event for the 17th time.
"It's a super feeling to know exactly where the ball is going, what the other guy is doing," said top seed Federer.
Federer, who is playing in Basel for the 19th time, won his first set to love at the tournament since 2006.
If Wawrinka beats America's Tiafoe in their second-round match, the Swiss pair will clash on Friday in the quarters.
The top seed finished on a first match point after five aces and five service breaks.
"It was great for a first match," said Wawrinka, who lost just nine points in 10 service games.
The seventh seed is playing Basel for the 14th time and improved his record at the event to 12-13.
Sixth seed David Goffin also stayed in the race to London with a 6-4, 6-4 defeat of 2014 US Open champion Marin Cilic.