Nos. 1 and 2 Rafael Nadal and Novak Djokovic reached Sunday's Sony Open final without playing a point Friday.
Djokovic was given a walkover for the second time in the Key Biscayne, Fla., event when Kei Nishikori withdrew because of a groin injury. Tomas Berdych pulled out before his match against Nadal due to gastroenteritis.
"It's very unlucky, very unusual," Nadal said. "Sorry for Kei, sorry for Tomas, and sorry for the tournament, especially sorry for the fans."
No. 1 Serena Williams will play No. 2 Li Na in the women's final Saturday.
Yuzuru Hanyu became the first man since Alexei Yagudin in 2002 to win the Olympic and world titles in the same year. The 19-year-old, who trailed Japanese compatriot Tatsuki Machida by nearly seven points after the world championships short program in Saitama, Japan, had a near-flawless free skate to finish at 282.59 -- three-tenths of a point ahead of Machida. American Jeremy Abbott was fifth. San Jose teen Polina Edmunds (60.59) is 12th heading into the women's free skate Saturday. Japan's Mao Asada had 78.66 points Thursday to lead after the short program. Americans Gracie Gold and Ashley Wagner were fifth and seventh.
The 49ers re-signed cornerback Perrish Cox to a one-year deal, the team announced. In a whirlwind two months last season, the three-year NFL veteran went from San Francisco, to playing for Seattle and back to the 49ers.
Northwestern confirmed it'll appeal a federal agency's ruling that its football players can create the U.S.'s first union of college athletes. Northwestern vice president Alan Cubbage "believes the decision overlooked or completely ignored much of the critical testimony supporting the university's position that student-athletes are not employees." A National Labor Relations Board regional director ruled Wednesday that players at the school qualify as employees under federal law and therefore may unionize. Also, preparations began for a vote by scholarship players on whether to authorize the College Athletes Players Association to represent them.
Kyle Busch became the sixth NASCAR driver to win a pole in the first six Sprint Cup races this year. He had a fast lap of 99.674 mph at Martinsville (Va.) Speedway. In the new knockout system, Joey Logano broke the track record at 100.201 during the first phase of qualifying. Denny Hamlin took the No. 2 starting spot at 99.548 over the 0.526-mile oval, followed by Logano at 99.428.
ESPN.com contributed to this report.