- Tag results for Stuttgart
The 39-year-old Haas, playing his last season before retirement, defeated the Swiss 2-6, 7-6, 6-4 in the second round of the Stuttgart Open.
The 35-year-old Spaniard defeated French rival Jeremy Chardy to qualify for the quarterfinals of the Stuttgart Open tennis tournament.
The 39-year-old Haas, playing for the last time at the grass-court tournament, defeated Pierre-Hugues Herbert in the first round to set up his next clash with Federer.
Maria Sharapova's planned return from a 15-month drugs ban at Stuttgart next month is disrespectful to other WTA players, including Caroline Wozniacki.
The 29-year-old five-time Grand Slam winner tested positive for meldonium at the 2016 Australian Open.