PRO BASKETBALL—The Pistons and the Bulls, tied for first in the Central Division as the week began, faced off on Detroit's home floor, and the Pistons walked away with a 100-90 victory and sole possession of the Central lead. Detroit held on to it despite a 104-97 loss to the Celtics, who were coming off one of their worst offensive outings ever, an 87-78 defeat by the Nets in which Boston scored only six points in the second period. That dropped the Celtics four games behind the Knicks, who remained atop the Atlantic Division by beating the Bullets 131-127 in overtime, the Pacers 101-96 in overtime and the Spurs 107-101. Even with that defeat and a 111-102 loss to the Magic, San Antonio remained the leader in the Midwest Division. The Spurs beat the Celtics 97-90 for their first win over Boston in a decade. The Pacific Division-leading Lakers bounced back from a 121-118 OT loss to the Suns with wins over the Magic (121-106) and the Rockets (107-98).
BOWLING—Ron Williams defeated Mark Thayer 232-212 to win a PBA event and $35,000 in Torrance. Calif.
PRO FOOTBALL—In the NFC title game, the San Francisco 49ers defeated the Los Angeles Rams 30-3; in the AFC final, the Denver Broncos beat the Cleveland Browns 37-21 (page 12).
GOLF—ROBERT GAMEZ shot an 18-under-par 270 to defeat Mark Calcavecchia and Jay Haas by four strokes and earn $162,000 in the Tucson Open.
HOCKEY—The Oilers spent the week on the road and stayed atop the Smythe Division by beating the Flames 3-2, as Martin Gelinas scored with 2:11 left in overtime, and tying the Kings 3-3. The Norris Division-leading Blackhawks also had a win and a tie on the road: They tied the Rangers 2-2 and then defeated the Flyers 5-4 on A1 Secord's hat trick. Chicago returned home and lost to the Flames 6-5. The Bruins continued to be the Adams Division leaders by beating the Nordiques 3-1 before having their five-game winning streak snapped when Ranger forward Tomas Sandstrom scored with 34 seconds remaining in the third period to give New York a 3-2 win. The hottest team in the league, the Islanders, won three games to move within four points of the Patrick Division-leading Devils (page 34).
HORSE RACING—FLYING CONTINENTAL ($16.80), with Corey Black up, won the San Fernando Stakes by three lengths over Splurger at Santa Anita. The 4-year-old colt covered the 1 1/8 miles in 1:47 1/5 to earn $128,600.
INDOOR SOCCER—Eastern Division pacesetter Baltimore had its lead over Wichita cut to a half game as the Wings beat the Blast 4-3 in two overtimes. In the West, first-place Dallas swept a home-and-home series from Kansas City, 5-4 in OT and 8-2.
TENNIS—YANNICK NOAH defeated Carl-Uwe Steeb 5-7, 6-3, 6-4 to win the men's championship and $21,600 at the New South Wales Open, in Sydney. NATALIA ZVEREVA beat Barbara Paulus 4-6, 6-1, 6-3 to win the women's title and $45,000.
MILEPOSTS—ELECTED: To the baseball Hall of Fame, JOE MORGAN, 46, who played second base for five teams in 22 years (1963-84), and former Baltimore Oriole pitcher (1965-84) JIM PALMER. 44. Morgan, a .271 career hitter with 268 home runs, 1,134 RBIs and 689 steals, was the National League MVP in 1975 and '76. Palmer, who had a 268-152 record, a 2.86 ERA and 2,212 strikeouts, won three Cy Young Awards ('73, '75 and '76) and won 20 or more games eight times.
FINED: By the NBA, Indiana Pacers coach DICK VERSACE, $3,500, for verbal abuse of referees, failing to leave the court in a timely manner and having to be forcibly restrained after a game on Jan. 6; and for making an informal wager with one another on a Jan. 10 game between their teams, Philadelphia 76er forward CHARLES BARK-LEY and New York Knick guard MARK JACKSON, $5,000 each (page 7).