Cincinnati Reds -- 3B Buddy Bell suffered a fracture at the tip of the middle finger on his right hand. The injury will not require a cast and should not cause Bell to miss much playing time. He was hit by a pitch during an exhibition game Monday. Minnesota Twins -- Purchased contract of P Juan Agosto from Chicago White Sox for cash; sent P Pete Filson to AAA. Toronto Blue Jays -- Reactivated C Ernie Whitt; optioned C Jeff Hearron to Syracuse of the International League. BASKETBALL

Boston Celtics -- Backup C Bill Walton suffered a strained left knee during Tuesday's 119-108 NBA playoff victory over the Atlanta Hawks, but he is not expected to miss Friday's game at the Omni. TENNIS

Northern Virginia Open -- Entries close May 5 for the NVTA men's tournament beginning May 10 at Courts Royal in Annandale. Entry forms may be obtained at the Tennis Factory, Ashe Tennis Shops and most Northern Virginia indoor clubs. FOOTBALL

Miami Dolphins -- Signed C Mark Dennard. St. Louis Cardinals -- Waived K Novo Bojovic, one day after drafting all-America kicker John Lee of UCLA. BOXING

The scheduled 10-round heavyweight bout between undefeated Mike Tyson and Mitch Green has been removed from the May 20 card at Madison Square Garden because of a possible scheduling conflict with the Stanley Cup playoffs, if the New York Rangers advance to the NHL finals. AUTO RACING

NASCAR -- Bill Elliott averaged 209.005 in his Ford Thunderbird to post the fastest time during time trials for the Winston 500 in Talladega, Ala. COLLEGES

Colonial Athletic Association -- Dan Woolridge, a college basketball official for 27 years, was named the first supervisor of officials of the CAA. Woolridge, 51, is from Salem, Va., and has officiated in the Southern and Atlantic Coast conferences.