The NBA's instant replay system was an instant success this season.

The league's review system won't change when it returns next fall, NBA deputy commissioner Russ Granik said during a low-key State of the League address with commissioner David Stern last night before Game 2 of the NBA Finals.

The replay system allows referees to take another look at plays in the final few seconds of each quarter. After a series of bad calls in the 2002 playoffs, league officials rushed the system into the rulebook.

According to Granik, who recently attended a meeting of the league's competition committee in Chicago, the system was used 421 times this season -- only 28 times at the end of a game. The officials' initial call was overturned just 13 times -- barely more than 3 percent.