Linz, Austria -- (Sports Network) - Top seed Maria Sharapova downed second seed and defending champion Nadia Petrova Sunday in an all-Russian final at the Generali Ladies Linz tennis tournament.

The U.S. Open champion Sharapova erased her fellow countrywoman in straight sets, 7-5, 6-2, in less than 90 minutes. She unleashed six aces and was 4-of-5 in break point conversions. The win earned Sharapova $95,500.

The 19-year-old Sharapova has been on fire as of late and has won her last 16 matches stretching back to the start of the U.S. Open, a streak that does not include a walkover loss in the quarterfinals of the Kremlin Cup when she withdrew because of a foot injury.

The former world No. 1 captured her third title in four events and 15th of her career. She has also won five of her six all-time meetings with Petrova and did not drop a set here in Linz.

Petrova was playing in her third straight final, most recently titling in Stuttgart. She also finished as the runner-up in her native Moscow earlier this month.

The loss snapped a seven-match winning streak for Petrova in Linz. She defeated Patty Schnyder in last year's final.

This was the 10th all-Russian singles final in WTA Tour history and second this month. Anna Chakvetadze beat Petrova for the Moscow crown two weeks ago.