Stuttgart - Sara Errani has ousted seventh seed Agnieszka Radwanska 7-6 (10-8), 6-4 in a first-round match at the Porsche Grand Prix on Wednesday which saw 17 breaks of serve.
The 2012 French Open runner-up Errani prevailed on second match point when Poland's Radwanska hit a forehand long for her 41st and final unforced error, going with 38 winners. Italy's Errani had 35 winners and 24 errors.
Each player held serve only once in the first set where Radwanska in the tiebreak squandered a 4-2 lead, came back from 6-4 down, missed two set points before losing the marathon set on a forehand winner from Errani.
Radwanska rallied from 4-2 down to 4-4 in the second but crashed out two games later.
Errani, who has a 2015 title from Rio de Janeiro, next plays German Sabine Lisicki or Zarina Diyaz of Kazakhstan.
The day has a distinct German flavour as Angelique Kerber and Julia Goerges were also due on court, before second seed Simona Halep of Romania was to open the second round late in the day against Spain's Garbine Muguruza.Results on Wednesday from the WTA Stuttgart tournament (x denotes seeding):
Angelique Kerber (GER) bt Alexa Glatch (USA) 6-2, 7-5
Sarina Dijas (KAZ) bt Sabine Lisicki (GER) 6-0, 6-0
Sara Errani (ITA) bt Agnieszka Radwanska (POL x7) 7-6 (10/8), 6-4