Haas Sets All-German QF In Washington; Dolgopolov Advances

© Getty ImagesTommy Haas is through to his fourth quarter-final of 2012.

Fourth seed Tommy Haas reached the quarter-finals for the fifth time in seven appearances at the Citi Open as he defeated Argentine Leonardo Mayer 6-4, 7-5 on Wednesday in Washington, D.C. Haas won 83 per cent of his first serve points and broke Mayer three times for the one hour, 39-minute victory.

The 34 year old improved to a 21-9 season record, including a 17-5 mark since the beginning of May. He won the grass-court title in Halle with victory over Roger Federer in the final, and finished runner-up to Juan Monaco at the clay-court ATP World Tour 500 tournament in Hamburg a couple weeks ago.

Haas next faces fellow German Tobias Kamke, who avenged his recent loss to Marinko Matosevic by converting four of 17 break point opportunities to beat the Australian 6-4, 6-3. Matosevic had defeated Kamke last week in the Los Angeles second round.

The 107th-ranked Kamke won consecutive tour-level matches for the first time since last October, when he reached the Stockholm quarter-finals (l. to Nieminen).  

Former champion James Blake eased into the quarter-finals with a 6-2, 6-4 win over Swiss qualifier Marco Chiudinelli in 75 minutes.

World No. 116 Blake, winner back in 2002 and a former Top 5 player, is aiming to get his season back on track after improving to a 3-8 season record.

The 32-year-old American, into his first ATP World Tour quarter-final of the year, saved all three break points he faced and fired nine aces.

Blake now faces second-seeded Ukranian Alexandr Dolgopolov for a place in the semi-finals.

World No. 25 Dolgopolov produced an impressive serving display, ousting Spanish veteran Ruben Ramirez Hidalgo 6-1, 6-3 to advance in 54 minutes.

Dolgopolov, 23, won 26 of 29 points on first serve and fired 15 aces against 34-year-old Ramirez Hidalgo.

He improves to a 20-15 season record, highlighted by a runner-up finish in his 2012 season opener in Brisbane (l. to Murray).

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