Sharapova, Djokovic shaky in wins; U.S.' Querrey upsets Raonic

WIMBLEDON, England (AP) -- Novak Djokovic is tough to beat at Wimbledon, indoors or out.

Playing the day's first Centre Court match Friday under the retractable roof, defending champion Djokovic rallied past Radek Stepanek 4-6, 6-2, 6-2, 6-2.

When a drizzle delayed the start of the third round, tournament officials decided Djokovic's match should be played inside. An odd spectacle ensued: The roof closed as the sun came out and outside court covers came off.

"I was a little bit surprised, when I saw sunshine, that the roof is closed," Djokovic said. "Obviously they're relying on a forecast that I don't think is very reliable here. But OK."

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