Leading Off

Bay football rivals to clash in exhibition

The Oakland Raiders will open their preseason by hosting the San Francisco 49ers. Both teams have released their preseason opponents, beginning with the annual Bay Area rivalry game that will be played at the Coliseum between Aug. 8 and 10. The Raiders will travel to Tennessee for a game Aug. 16 and host Arizona the following weekend before finishing the preseason at Seattle on Aug. 28 or 29. The 49ers host Green Bay on Week 2 of the preseason, play at Chicago on Aug. 21 and host San Diego on Aug. 29. Preseason schedules, Page C-5

Jose, can you help?

Jose Canseco was approached by two employees from Major League Baseball before a book signing appearance Thursday in New York, and the lawyer for the former A's right fielder said they asked for assistance in drug investigations. "We asked, 'Why didn't you come before?' " said Canseco's lawyer, Robert Saunooke, "and they said, 'Those are good points. You're right, and now we want you help.' " Saunooke said he or Canseco would call the investigators when Canseco finishes a book tour scheduled to run through next week.

Bonds' ball is pricey

Bidding has reached $177,156 for Barry Bonds' record-setting home-run ball. Jameson Sutton, the owner of Bonds' No. 762 home run ball, is accepting online bids at Bidding runs through April 12.

Real ball-hawk

A student touring Fenway Park was attacked by a resident red-tailed hawk that drew blood from the girl's scalp Thursday. The girl was taken by ambulance to a hospital, but wasn't seriously injured. The hawk was perched on a railing in the upper deck behind home plate while the group of middle schoolers from Bristol, Conn., toured the Boston stadium. The hawk flew at the girl and swooped with its talons extended, scratching her scalp.

Olympians beware

Athletes around the world will be subjected to out-of-competition tests for human growth hormone in the lead-up to the Beijing Olympics, marking a potential breakthrough against one of the most widely abused doping substances in sports. David Howman, director general of the World Anti-Doping Agency, said newly produced HGH testing kits soon will be distributed to accredited doping labs around the globe to screen blood samples for the banned performance-enhancing hormone. An improved HGH test also will be in place during the Aug. 8-24 Olympics.