Terry Cummings scored nine of his 23 points in the fourth quarter and Kenny Fields had a career-high 23 points to help the Bucks beat the New York Knicks, 115-108, in a National Basketball Association game last night in Milwaukee.

The Knicks' coach, Hubie Brown, was ejected in the first quarter for arguing and his team fell behind by 17. It was the Bucks' 11th victory in 12 games and the Knicks' 11th loss in 12 games.

Patrick Ewing of the Knicks fouled out with four points. SuperSonics 118, Rockets 105

Reserve guard Michael Phelps made his first six shots to help the SuperSonics to a 19-point lead in the second quarter in Seattle. He finished with 17 points.

During a 10-0 SuperSonics streak that gave them an 81-52 lead, Houston center Ralph Sampson received two technical fouls was automatically ejected. So was his coach, Bill Fitch. Mavericks 139, Suns 138

Rolando Blackman's dunk with eight seconds left in the second overtime won the game in Phoenix.

Mike Sanders took the Suns' last shot but James Donaldson blocked it. Mark Aguirre had 42 points for Dallas and Blackman 32. Lakers 127, Warriors 117

Los Angeles' Kareem Abdul-Jabbar scored 15 of his 34 points in the first five minutes of the second half in Inglewood, Calif.