BUFFALO, N.Y. (AP) _ Buffalo Bills quarterback Jim Kelly hurt his right ankle over the weekend when he stepped into a hole while tossing a football around with youngsters at a promotional event, team officials said.

The Bills were to examine the ankle today, but preliminary indications are that it was sprained and not broken, team officials told the Buffalo News.

Kelly was hosting an event sponsored by a sporting goods manufacturer Saturday near Boston when he turned his ankle. A physician for the New England Patriots examined him and took an X-ray, which revealed no break, team officials said.

''A sprained ankle is a sprained ankle,'' said Bills General Manager Bill Polian Sunday night. ''It can go anywhere from mild to severe, but we don't know the details now.''

Kelly was advised to remain on crutches as a precautionary measure for 10 days to two weeks, and will likely miss the team's Aug. 4 exhibition opener against the Houston Oilers, officials said.

Just last week, Kelly conducted a passing exhibition at Rich Stadium to convince reporters he had recovered from an injury to his passing arm suffered in the Pro Bowl in Honolulu. Kelly had complained of soreness in the arm this spring.