Pat Riley's worst season as coach of the Miami Heat will be his last.

"I didn't have to look back," Riley said, recalling the final time he walked off the court in the final regular-season game. "I know that's behind me."

Riley, a Hall of Famer, has resigned as coach but remains team president. Assistant coach Erik Spoelstra, 37, will replace Riley on the Heat bench, making him the youngest current coach in the NBA. Miami finished the season with the NBA's poorest record (15-67) and, by far, the worst of Riley's 25-year career.

Magic

Hedo Turkoglu, whose 19 points, 5 rebounds and 5 assists per game helped Orlando win its first division title in 12 years, was selected as the NBA's most improved player.

Hornets

Coach Byron Scott, who led New Orleans to its first playoff appearance in four years this season, has been chosen as the NBA coach of the year. Scott is expected to receive the award today before the Hornets play host to the Dallas Mavericks in Game 5 of their first-round Western Conference playoff series. New Orleans leads, 3-1.

Elsewhere

Boston Celtics forward Paul Pierce and Washington Wizards guard DeShawn Stevenson each were fined $25,000 by the NBA for making "menacing gestures" in playoff games over the weekend. ... ... NBA commissioner David Stern will not be ordered to testify in a case brought by the city of Seattle to try to keep the SuperSonics from moving to Oklahoma City, though a federal judge may consider ordering the testimony in the future. ... Will Robinson, the first black coach at a Division I school and a Detroit Pistons scout, died at a Detroit hospital yesterday after a long illness. He was 96. (Obituary: Will Robinson / First black Division I coach, found Rodman)