Kentucky fans took a slim lead over Tennessee fans, 539-535, in the first day of the 25th-annual Big Blue Crush blood battle between the two schools.

The event continues through Friday, Nov. 16. Donors will receive a short-sleeve, black, commemorative Big Blue Crush T-shirt, a coupon for a free McDonald’s McCafe’ beverage, a Bleed Blue wristband and a chance to win daily prizes.

Kentucky Blood Center has donor centers in Lexington, Pikeville and Somerset, and the city leaders in all three communities have proclaimed Nov. 12-16 as Big Blue Crush Week. KBC donors have claimed the Crush trophy the past two years, but Tennessee leads the competition 12 to 11 with 1 tie.

To schedule a donation or to find a donation location, visit kybloodcenter.org or call 800.775.2522.

Blood donors must have a photo I.D., be 17 years old (16 with parental consent), weigh at least 110 pounds, be in general good health and meet additional requirements. Sixteen-year-old donors must have a signed parental permission slip, which can be found at kybloodcenter.org.