HALLE, Germany -- Roger Federer began his bid for a record-extending 10th Halle Open title with a 7-6 (1), 6-3 win over Australia's John Millman on Tuesday, with defending champion Borna Coric also advancing.
Federer, who lost to Coric in last year's final, hit nine aces and saved the only break point he faced to beat Millman in 1 hour, 17 minutes.
Federer already has the best grass-court record in the Open era with 18 titles, and the 37-year-old can set a personal record with his 10th at a single event in Halle.
Federer and Tsonga played only once before on grass, with the French player coming from two sets down to win at Wimbledon in 2011.
Seppi beat Mats Moraing 6-4 (7), 6-4.