A Roundup of the Week Oct. 26-Nov. 1

BOXING—THOMAS HEARNS knocked out Juan Roldan of Argentina in the fourth round to claim the WBC middleweight crown, in Las Vegas. Hearns is the first boxer to win titles in four weight classes. On the undercard, CHARLES WILLIAMS took the IBF light heavyweight title from Bobby Czyz when Czyz's corner threw in the towel after nine rounds (page 34).

Jorge Vaca of Mexico, bleeding profusely from a head butt, won the WBC welterweight title from Lloyd Honeyghan of Great Britain when their fight was stopped in the eighth round with Vaca ahead on two of three cards, in London.

FIGURE SKATING—DEBI THOMAS edged Elizabeth Manley of Canada to win the women's title at Skate Canada, in Calgary. BRIAN ORSER of Canada turned the tables by beating Brian Boitano of the U.S. for the men's title.

PRO FOOTBALL—In his first start this season, Jim McMahon passed for three TDs and 287 yards to lead the Bears to a 31-28 come-from-behind win over the Chiefs. It was Chicago's 24th consecutive victory in games McMahon has started, and it raised the team's record to 6-1, best in the NFC Central. Tampa Bay moved into second place behind Chicago by beating Green Bay 23-17. Washington stayed on top of the NFC East with a 27-7 win over Buffalo, intercepting Jim Kelly three times and holding the Bills to just 21 yards rushing. The Saints recorded only the sixth shutout in their 21-year history, smothering the Falcons 38-0 and making five interceptions. Eric Dickerson played his first game as a Colt—rushing for 38 yards on 10 carries—but it was Albert Bentley's 145-yard performance that sparked AFC East-leading Indianapolis to a 19-14 triumph over the Jets (page 18). Bo Jackson made his NFL debut with the Los Angeles Raiders, carrying eight times for 37 yards in the Raiders' 26-23 loss to the Patriots on a last-second 29-yard field goal by Tony Franklin. Dan Marino passed for four TDs and 332 yards to lead the Dolphins to a 35-24 win over the Steelers. Vince Abbott kicked a 33-yard field goal 2:16 into overtime to give the Chargers their sixth consecutive victory, 27-24 over the Browns. In other squeakers, the Oilers beat the Bengals 31-29 on Warren Moon's quarterback sneak in the final minute, and the Eagles squeezed by the Cardinals 28-23 when Gregg Garrity caught Randall Cunningham's third TD pass of the game with 40 seconds left. The NFC West-leading 49ers hammered the hapless Rams 31-10, as Joe Montana completed 21 of 30 passes for 294 yards and three TDs. Seattle improved to 5-2 with a 28-17 win over Minnesota, and Denver thrashed Detroit 34-0.

GOLF—In the last event of the 1987 PGA Tour, in San Antonio, TOM WATSON shot a final-round 68 to defeat Chip Beck by two strokes and collect $360,000, the richest purse in PGA history. Watson's 72-hole total of 268 was 12 strokes under par and earned him his first win since July 1984. CURTIS STRANGE finished last but took the season's money-winning title with a total of $925,941 (page 44).

HOCKEY—The Devils continued to impress, going 2-0 against the two teams in last year's Stanley Cup finals. They beat the Flyers 4-0—goalie Alain Chevrier's first shutout—and then edged the Oilers 6-5 to run their string of consecutive home wins to six, a club record. Philadelphia's Ron Hextall returned from his eight-game suspension for slashing in last year's playoffs, but the Flyers' winless streak reached five before they beat the Kings 4-1, in a game highlighted by Brian Propp's 300th goal. The one bright spot in the Rangers' 0-3-1 week was Marcel Dionne's 700th goal, though it came in an 8-2 loss to the Islanders. Dionne became only the third NHL player to score 700 goals, behind Gordie Howe (801) and Phil Esposito (717). Montreal paced the Adams with a 2-1-1 week, losing 5-3 to Calgary, then beating Edmonton 3-1 and Detroit 5-4. and tying Boston 3-3. After losing their first five games of the season, the Whalers have been unbeaten in six, to make their record 5-5-1. The Maple Leafs jumped to the top of the Norris Division with a 3-0 week, beating the Islanders 5-2. the Penguins 4-0 and the Blackhawks 6-5. Chicago slipped from first place during a disastrous road trip on which the club won just one of six games. The Smythe Division-leading Oilers also had trouble on the road, losing three in a row before they topped the Rangers 7-6.

HORSE RACING—LE GLORIEUX ($6.40), ridden by Laffit Pincay Jr., won the Washington D.C. International at Laurel Race Course by a neck over Great Communicator. The 3-year-old colt from West Germany earned $450,000 by running the 10 furlongs over the turf in 2:02[4/5].

Firery Ensign ($11.60), with Jorge Velasquez in the saddle, won the Young America at the Meadowlands by 1¼ lengths over Cherokee Colony. The 2-year-old colt covered the 1[1/16] miles in 1:45 to claim $300,000.

MARATHON—IBRAHIM HUSSEIN of Kenya and 42-year-old PRISCILLA WELCH of Great Britain won the men's and women's divisions of the New York City Marathon, finishing the 26.2 miles in 2:11:01 and 2:30:17, respectively (page 24).

MOTOR SPORTS—MICHAEL ANDRETTI, in a March-Cosworth, won the rain-swept Nissan Indy Challenge by 56.045 seconds over Al Unser Jr., in another March-Cosworth. Andretti earned $67,410, completing the 103 laps of Miami's 1.784-mile Tamiami Park circuit in 1:56:12.55, an average of 94.873 mph.

TENNIS—STEFFI GRAF of West Germany, the top seed, beat second-seeded Hana Mandlikova of Czechoslovakia 6-2, 6-2 to win the European Indoors women's title and $30,500, in Zurich.

MILEPOSTS—NAMED: As National League Manager of the Year by the Baseball Writers' Association of America, BUCK RODGERS, 49, of the Montreal Expos, whose 91-71 record this year was third-best in the National League East and fifth-best in the majors. And, as American League Manager of the Year for the second time in four years, SPARKY ANDERSON, 53, whose Detroit Tigers finished with a 98-64 record, tops in the majors.

RESIGNED: As president and general manager of the Chicago Cubs, DALLAS GREEN, 53, who in 1984 led the organization to first place in the National League East for Chicago's first postseason appearance since 1945. This year the Cubs finished last.

SIGNED: By the Washington Bullets, forward BERNARD KING, 31, after the New York Knicks failed to match the Bullets' offer sheet of $2.2 million for two years. King led the NBA in scoring in 1984-85 but has played only six games since injuring his right knee in 1985.

TRADED: By the Los Angeles Rams, All-Pro running back ERIC DICKERSON, 27, to the Indianapolis Colts for a first-and second-round draft pick in 1988, a second-round choice in 1989 and running back OWEN GILL. As another part of the deal, the Colts also traded the signing rights to line-backer CORNELIUS BENNETT, 22, second pick overall in the 1987 draft, to the Buffalo Bills for running back GREG BELL, Buffalo's first-round pick in 1988 and one pick in each of the first two rounds of the 1989 draft, all of which the Colts gave to Los Angeles.