Top seed and world No. 1 Roger Federer faced a tough test in his first-ever appearance at the AIG Japan Open on Wednesday before dispatching qualifier Viktor Troicki 7-6 (7-2), 7-6 (7-3) at a packed Ariake Colosseum.
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Federer, who received a first-round bye, would have been forgiven for expecting an easier start to the Tokyo tournament, but came up against a plucky 20-year-old making his debut in an ATP event -- and the Serbian showed little sign of stage-fright.