Maria Sharapova declared herself "way above" responding to Eugenie Bouchard after recording the second win of her comeback to reach the quarter-finals of the Stuttgart Grand Prix.
After a nervy start and ultimately comfortable win against Roberta Vinci in the first round on Thursday, Sharapova stepped up a level to beat fellow Russian Ekaterina Makarova 7-5 6-1.
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Sharapova back with a win
Maria Sharapova returns from a 15-month ban, beating Roberta Vinci in straight sets in the first round of the Stuttgart Grand Prix.
It came after world No.59 Bouchard said Sharapova, returning from a 15-month doping ban, was "a cheater" and that "a cheater in any sport should not be allowed to play again", adding she was "not someone I can say I look up to anymore".
Asked about the comments, Sharapova said: "I don't have anything to say - I am way above that."
The only slight concern was a growing proliferation of double faults from Sharapova, a weakness since severe shoulder problems earlier in her career.
But the seven doubles were outweighed by nine aces, the last of them on her first match point.
The draw has been kind to Sharapova and she will face another unseeded player in the quarter-finals in Estonia's Anett Kontaveit.
The world No.72 is in great form, though, having reached the final of her last tournament in Switzerland before upsetting French Open champion Garbine Muguruza in the second round in Stuttgart.
![Keeping her own counsel: Maria Sharapova.](/web/20170502000113im_/http://www.smh.com.au/content/dam/images/g/v/u/9/5/j/image.related.articleLeadwide.620x349.gvu8m5.png/1493383617037.jpg)
Sharapova's two victories have already ensured she will be back in the top 400 in the rankings on Tuesday, edging her closer to earning direct entry for Wimbledon.
The Russian has two more tournaments in Madrid and Rome in which to secure enough points, while reaching the final in Stuttgart would earn her entry into French Open qualifying without the need for a wild card.
"Being the second match and playing yesterday and getting all the emotions out, I feel I settled down a little bit today and I was able to focus on my game. I executed a great plan," the 30-year-old said in an on-court interview.
Elsewhere, France's Kristina Mladenovic caused the biggest upset of the tournament to date when she beat top seed Angelique Kerber 6-2 7-5.
Johanna Konta was bundled out in straight sets by Latvia's Anastasija Sevastova, while Carla Suarez Navarro was too good for Elena Vesnina and Germany's Laura Siegemund upset eighth seed Svetlana Kuznetsova with a 6-4 6-3 win.
AAP
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