Nikolay Davydenko, who hopes to return to the top 20 as part of his farewell year, brought comedy as well as an upset to the seedings as he reached the second round of the Dubai Open here on Tuesday. The former world number three from Russia beat Janko Tipsarevic, the sixth-seeded Serbian, 6-0, 7-5 but it took him half an hour to take the first two games, and fully 50 minutes to win the love set. It was in many ways a bizarre match, matched to some extent by the amusingly crazy comments which Davydenko afterwards proffered.