HORSE RACING—Repeating to a nose the running of the Challenge Cup two weeks ago. RUN DUSTY RUN and Silver Series, equally weighted at 123 pounds, battled head to head down the stretch with Run Dusty once again surviving an inquiry and emerging the victor in a photofinish in Hialeah's $72,800 Seminole Handicap. As before, stablemate Bob's Dusty was third. The 4-year-old son of Dust Commander, under Don Brumfield. covered the nine furlongs in 1:47[3/5] and paid $6.60.
Taisez Vous ($2.80), Donald Pierce up. swept Santa Anita's distaff triple for 4-year-olds by winning the $110,000 La Ca�ada, covering the nine furlongs in 1:49[4/5] over a muddy track and crossing the wire four lengths in front of Drama Critic.
Chance dancer ($10.20). winner of the Arizona Paradise Futurity, won the $43,600 San Vicente Stakes at Santa Anita, the West Coast's first major prep for the Kentucky Derby. Under Richard Culberson, the gelded son of Gaelic Dancer ran the seven furlongs over a slow track in 1:22[1/5].
SKIING—PHIL MAHRE of White Pass, Wash, took both heats of a World Cup slalom in Chamonix, France in the combined time of 1:58.26, 1.59 faster than world champion Ingemar Stenmark, who was second. It was the first slalom victory of the season for the U.S. team. Canada got its first World Cup win in two years and its strongest finish since the series was inaugurated in 1967 when KEN READ won the downhill, with teammate Dave Murray second.
SPEED SKATING—ERIC HEIDEN won his second straight overall title at the world sprint championships in Lake Placid. Beth Heiden finished second to LIUBOV SADCHIKOVA of the Soviet Union in the women's competition (page 10).
TENNIS—SANDY MAYER won his first WCT title, defeating Eddie Dibbs for the first time ever 7-6, 6-4 in the $175,000 St. Louis Classic.
Heinz Gunthardt, an unseeded 19-year-old alternate from Switzerland, upset top-seeded Harold Solomon 6-2, 3-6, 6-2 to win the $75,000 Springfield (Mass.) International Classic.
MILEPOSTS—FIRED: By the St. Louis Cardinals, Coach DON CORYELL. 53, after weeks of public wrangling with owner Bill Bidwill. Coryell was the winningest coach in Cardinal history with a five-year 42-27-1 record and two divisional championships (page 18).
NAMED: Swimmer JOHN NABER, by the AAU as winner of the Sullivan Award honoring the year's top U.S. amateur athlete.
NAMED: By the New Orleans Saints as coach. DICK NOLAN. 45, who led the San Francisco 49ers to three divisional titles, to succeed Hank Stram, who was fired.