MIAMI -- Pat Riley's worst season as coach of the Miami Heat will be his last.
The Hall of Famer has resigned as coach but remains team president. Assistant coach Erik Spoelstra will replace Riley on the Heat bench, making the 37-year-old 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.