( CNN ) -- Rafael Nadal continued his domination on clay as he crushed compatriot Guillermo Garcia-Lopez 6-1 , 6-2 in the second round of the Barcelona Open . The Spaniard carved out 15 break points during the match , polishing off Garcia-Lopez in just over 80 minutes . It was Nadal 's 30th straight victory at the event , where he has won six of the last seven titles at the Real Club de Tennis . Nadal has started the season in ominous form . After battling back from a serious knee injury , the world number two won his first title in ten months last week after finally beating rival -- and world number one -- Novak Djokovic in the final of the Monte Carlo Masters . Last year 's beaten finalist David Ferrer also cruised into the third round by beating the Serbian Filip Krajinovic 6-0 , 6-3 . `` I played pretty well , it was a relatively comfortable start , '' the Spaniard told AFP . `` The second set was not as good as the first , but I kept my energy and speed . I had shoulder problems but I had treatment here on Friday . But I still did n't know last Sunday if I could play . '' Ferrer , who plays fellow Spaniard Albert Montanes next , will be hoping that his shoulder improves significantly over the next few days : he has lost three finals and counting to Nadal . Elsewhere former women 's world number one Ana Ivanovic lost to 21-year-old German wild-card Mona Barthel in the first round of Stuttgart 's clay-court WTA tournament . Barthel fired 11 aces as she beat Ivanovic 7-5 , 7-6 ( 7/4 ) before admitting that the Serb was something of a hero of hers . `` There was something special , because Ana used to be a bit of a role model for me , '' Barthel told AFP . `` I was still at school when she won the French Open and I watched it on television . `` At that time all this was a long , long way off for me . '' Ivanovic has struggled to recapture the form that saw her win the French Open four years ago . The same ca n't be said for Barthel who has had an incredible 2012 . She won the Hobart WTA tournament in January before reaching the third round at the Australian Open . She was only stopped by eventual winner Victoria Azarenka , the current world number one . Poland 's Agnieszka Radwanska eased into the quarterfinals when she beat Hungary 's Greta Arn of Hungary 6-3 , 6-4 .
World number two Rafael Nadal starts with win at French Open . Reigning champion enjoys 30th straight win in the tournament . Former world number one Ana ##ity loses to qualifier in quarterfinals . German Mona Barthel helps Ivanovic win French Open whilst at Wimbledon .