A Roundup Of The Week Aug. 6-12

ARENA FOOTBALL-The DETROIT DRIVE won its third straight league championship, beating the Dallas Texans 51-27, in Detroit. Drive quarterback Art Schlichter, who completed 14 of 23 passes for 176 yards and two touchdowns, was named the Most Valuable Player.

BOXING- PERNELL WHITAKER knocked out Juan Nazario at 2:59 of the first round to win the WBA lightweight crown, in Lake Tahoe, Nev. The victory by Whitaker, who is already the WBC and IBF champion, unified the title for the first time since 1978.

EQUESTRIAN—CHRIS KAPPLER, riding Concorde, had two penalty-free rounds and a jump-off time of 36.80 to defeat Donald Cheska, aboard Dury Lad, who had four faults in the jump-off, and win a Grandprix event in Indianapolis.

GOLF-WAYNE GRADY shot a six-under-par 282 to beat Fred Couples by three strokes and win the PGA Championship, at Shoal Creek Country Club in Birmingham. It was Grady's first major title as a professional and earned him $225,000 (page 20).

Pat Hurst defeated Stephanie Davis in 37 holes to win the U.S. Women's Amateur title, in Summit, N.J. Hurst, who is a senior at San Jose State, was the 1989 women's NCAA champion (page 64).

Chi Chi Rodriguez shot a final-round four-under-par 68 to beat Jim Dent, Jim Ferree and Charles Coody by two strokes and win a Senior PGA Tour event in Albuquerque. Rodriguez, who shot an 11-under-par 205 for the tournament, took home $52,500.

Kathy Gerring birdied the first playoff hole to defeat Caroline Keggi and win an LPGA tour event in Stratton Mountain, Vt. Gerring shot a seven-under-par 281 for the tournament and collected $67,500.

HARNESS RACING-BEACH TOWEL ($3), driven by Ray Remmen, beat In The Pocket by two lengths to win The Adios at the Meadows racetrack in Pennsylvania. The 3-year-old colt covered the mile in 1:51[4/5] and earned $147,953.

Dorunrun Bluegrass ($3), with Herv� Filion in the sulky, won the U.S. Pacing Championships by 2� lengths over Conditional, at Yonkers Raceway. Dorunrun Bluegrass, a 4-year-old horse, covered the mile in 1:56 and earned $37,500.

HORSE RACING—PLEASANT VARIETY ($12.20), ridden by Earlie Fires, defeated Double Booked by three lengths to win the Arlington Handicap, a turf race at Arlington International Racecourse. The 6-year-old horse covered the 1� miles in 2:04 and earned $180,000.