Brooklyn Nets coach Jason Kidd pleaded guilty Tuesday to a misdemeanor drunk driving charge and was placed on interim probation nearly a year after he smashed his Cadillac SUV into a utility pole on eastern Long Island. In exchange for the guilty plea, Kidd agreed to speak to Long Island high school students about the dangers of drunk driving. If he fulfills his community service, his plea will be reduced to a violation — driving while ability impaired — when he returns to court on Sept. 30. Kidd, who retired as an NBA player after last season, was recently hired to coach the Nets . . . Chauncey Billups is back with the Pistons, who brought him back on a two-year deal for $2.5 million each year . . . Mike Miller was designated the Heat’s amnesty player, a move that may save the Heat more than $30 million in luxury tax payments over the next two years . . . The Bucks waived forward Drew Gooden and designated him as their amnesty player . . . The Spurs agreed to a two-year contract with forward Jeff Pendergraph, who spent the past two seasons at Indiana . . . Mavericks rookie guard Shane Larkin underwent surgery to repair his broken right ankle . . . In the WNBA, Crystal Langhorne had 13 points and nine rebounds, and the host Washington Mystics defeated the Silver Stars, 86-64.