The proposed welterweight championship fight between

Manny Pacquiao

and

Floyd Mayweather Jr.

has been thrown into jeopardy.

Mayweather's camp is demanding that the fighters submit to Olympic-type drug testing in the weeks leading up to the bout. Leonard Ellerbe, Mayweather's manager, said the March 13 fight in Las Vegas would not go on if Pacquiao does not agree to blood testing under standards followed by the United States Anti-Doping Agency.

However, Pacquiao's trainer, Freddie Roach, said he would agree to testing, as long as it was not overly intrusive.

Neither fighter has signed a formal contract for the bout.

WINTER SPORTS: Visually impaired cross-country skier Brian McKeever of Canada is a step closer to becoming the first winter athlete to compete in both the Olympics and the Paralympics.

McKeever won an able-bodied 50-kilometer race in Canmore, Alberta. Canada's cross-country ski federation will select its Olympic team next month.

McKeever has won seven Paralympic medals, including four gold.

Female ski jumpers are focusing on 2014 now that they have lost their final bid to compete at the Vancouver Olympics.

The Supreme Court of Canada refused to hear an appeal of two lower-court rulings that said Canada's Charter of Rights cannot dictate which sports are included in the Winter Games.

Vancouver Olympic organizers have launched a Web site that allows Canadians to resell their tickets unhindered by a price cap.

Tickets can be sold or bought at www.vancouver2010.com. Buyers must pick up their tickets at either the main ticket center or the venue box office.

Tickets to the men's gold medal hockey game with a face value of between $330 and $520 were being offered for $4,730 within hours of the site's launch.

COLLEGES: A woman pleaded not guilty yesterday to new charges, including retaliating against a witness, related to an alleged extortion attempt against Louisville basketball coach Rick Pitino.

Karen Cunagin Sypher's attorney, James Earhart, entered the plea one month after a federal grand jury handed up a second indictment against her.

The new charges stem from a police report Sypher filed accusing Pitino of raping her. The FBI, Louisville police and prosecutors have said there was no basis for her rape allegations.

Louisville forward Terrence Jennings has been suspended for today' s game against Louisiana-Lafayette for a violation of team rules.

Georgetown junior Nikita Mescheriakov is transferring to another school at the end of the semester to get more playing time, coach John Thompson III said.

TENNIS: Serena Williams was named the Associated Press female athlete of the year.

Williams and Roger Federer were named the International Tennis Federation's world champions of 2009.

NOTEWORTHY: Two former youth soccer coaches have pleaded not guilty in Somerville, Mass., to raping a girl on their team between 2003 and 2004.

Roger Lau and Thomas Heinz, both 26, were arraigned in Somerville District Court on forcible child rape charges. Lau faces four counts, Heinz faces one.

Former mountain biking world champion Melissa "Missy" Giove, 37, pleaded guilty in Albany, N.Y., to aiding a coast-to-coast marijuana smuggling ring. She is expected to be sentenced to up to five years in prison on March 25.

- Staff and wire reports