Miami Dolphins tight end Randy McMichael was arrested yesterday in Fort Lauderdale, Fla., for allegedly hitting his pregnant wife.

McMichael was charged with aggravated battery on a pregnant woman, a second-degree felony that is punishable by up to 15 years in prison, Broward County sheriff's officials said.

His wife, Cawanna McMichael, also was arrested on a domestic battery charge stemming from the early Tuesday morning fight at their home. Officials said Cawanna McMichael is six months pregnant.

Randy McMichael was released last night on $5,000 bond; his wife on a $1,000 bond, officials said.

The 6-foot-3, 247-pound McMichael has caught 88 passes for 1,083 yards and six touchdowns in two seasons with the Dolphins.

* PRO BASKETBALL: Sam Mitchell was hired as coach of the Toronto Raptors.

Mitchell, who played in the NBA for 13 years, was an assistant coach for the expansion Charlotte Bobcats for the past month. He replaces Kevin O'Neill, who was fired after a 33-49 season.

Mitchell, 40, played 10 seasons with Minnesota and is the club's leader in games played and was second in scoring before retiring in 2002.

The Raptors chose Mitchell over Seattle SuperSonics assistant Dwane Casey and Detroit Pistons assistant Mike Woodson. . . .

The New Jersey Nets have made a qualifying offer to forward Kenyon Martin.

A restricted free agent, Martin will be eligible to talk with any team during the first two weeks of July. The Nets will have 15 days to match any offer he receives.

Martin averaged 16.7 points and 9.5 rebounds a game last season.

* AUTO RACING: NASCAR officials spent yesterday discussing what type of punishment to levy against driver Tony Stewart for an altercation with Brian Vickers after the Dodge/Save Mart 350 on Sunday in Sonoma, Calif.

"His behavior . . . is unacceptable," NASCAR Chairman Brian France said. "Tony has to work within the same rule structure and behavioral expectations that we have for all of our drivers."

Stewart's temper has resulted in repeated run-ins with NASCAR authorities over the years. . . .

Al Unser Sr. said his son, two-time Indy 500 winner Al Unser Jr., was considering retirement after more than 21 seasons driving Indy cars.

The Indianapolis Motor Speedway has a news conference planned for today, but did not give details. Unser, 42, also won CART championships in 1990 and 1994.

* COLLEGE BASKETBALL: Auburn's top scorer and rebounder, Marco Killingsworth, has transferred to Indiana for his senior season. He must sit out one year before playing for the Hoosiers.

The 6-foot-7 Killingsworth averaged 13.7 points and 6.9 rebounds last season, and is one of 10 players in Auburn history to record more than 1,000 points and 500 rebounds in three seasons.

-- From News Services