HAMBURG, Germany (AP) — Three German players scored upsets Monday to advance to the second round of the German Open.
Qualifier Bastian Knittel beat Ivan Dodig of Croatia 6-4, 6-3 for his first tour-level victory of the year.
Wild card Tobias Kamke, the 2010 ATP Newcomer of the Year, routed Pere Riba 6-1, 6-1 . He improved to 2-0 against the Spaniard.
Julian Riester defeated Denis Istomin of Uzbekistan 6-3, 6-4 to avenge last year’s defeat in the third round in Hamburg.
