Novak Djokovic moves into 4th round

[truebluefan]

Novak Djokovic repelled a challenge from Radek Stepanek to advance to the fourth round of the Australian Open and still had plenty left over to unleash some stinging shots at Lance Armstrong after the doping-tainted cyclist's long-expected confession.

Djokovic broke the 34-year-old, 34th-ranked Stepanek late in each set of a 6-4, 6-3, 7-5 win Friday, extending his winning streak to 17 matches at the Australian Open.