Intro:

Highlights from second round matches at the 2014 Dubai Duty Free Tennis Championships as Tomas Berdych knocked out Sergiy Stakhovsky 6-2, 6-1 in just 57 minutes, while Tunisian wild card Malek Jaziri defeated Somdev Devvarman of India 6-3, 7-5 also in straight sets in Dubai on Wednesday.

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Third seed and last year's runner-up Tomas Berdych knocked out Sergiy Stakhovsky 6-2, 6-1 in just 57 minutes at the Dubai Duty Free Tennis Championships on Wednesday.

As a result, he extended his winning streak to eight games, giving him 15 match wins this season.

Berdych will now face fifth-seed Jo-Wilfried Tsonga, who advanced without hitting a ball when his opponent, Nikolay Davydenko, withdrew prior to their second round match due to a rib injury.

Elsewhere, world number 78 Somdev Devvarman went down 3-6, 5-7 against his 137-ranked opponent Malek Jaziri.

Devvarman had just come off a shock win over fifth-ranked Juan Martin del Potro, who retired after the first set with a wrist injury.

Devvarman entered the Dubai tournament high on confidence, after winning the 100,000 US dollar ATP Challenger Delhi Open on Sunday, elevating him 18 places in the world rankings.

Jaziri will now face Germany's Philipp Kohlschreiber in the quarter-finals, who won his match against Andreas Seppi 6-3, 6-3.