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There's no denying that Miami's "Big Three" was going to win the Heat many, many games whether they had a very good coach or not.
That said, Erik Spoelstra has done a great job as head coach and deserves a lot of credit for the team's championship run this past June.
Spoelstra's best coaching adjustment during the 2012 postseason was clearly his embrace of small-ball, which involved Chris Bosh starting at the 5 with LeBron James at the 4.
With that move, Spoelstra turned the Heat's biggest disadvantage (size down low) into an advantage due to the matchup problems Bosh and LeBron create in those respective roles.
But Spoelstra had been enabling the Heat to win long before the small-ball era, instilling a defense-first attitude that has led to many grind-it-out victories over the years.
Spoelstra is one of the better defensive coaches in the NBA, with the Heat finishing in the top five in defensive efficiency in the past two years.
And if you think his defensive success is due only to the Heat's excellent players, you'd be wrong.
The Heat allowed the second-fewest points in the NBA in the 2009-10 season when the team's second-biggest minute-getter was Michael Beasley, who, let's just say, isn't renowned for his defensive ability.
Spoelstra is never going to receive much credit for the Heat's success, but his principles and decision-making have played a large part in creating it.