Looking to jump-start a sluggish offense, Miami Heat coach Erik Spoelstra is considering changing his starting lineup for Game 4 of the NBA Finals and inserting the hot-shooting Mike Miller, sources said Thursday.

Miller is 10-of-11 shooting on 3-pointers in the Finals thus far and is shooting 50 percent from behind the arc in the postseason. He started 17 games in the regular season, mostly as a fill-in for Dwyane Wade when he was battling injuries, and the Heat were 13-4 in those games.

Miller started Game 4 of the Heat's series against the Milwaukee Bucks, a game the Heat won by 11 points.

If Spoelstra decides to make the change with Miami trailing the San Antonio Spurs 2-1 in the best-of-seven Finals, Miller likely would replace Udonis Haslem in the starting lineup to give the Heat more shooters in an attempt to spread the floor. The Spurs have been successful in packing the paint over the series' first three games and it has cramped the driving space for LeBron James and Wade.

That lineup started together twice in the regular season and averaged 107 points in wins over the Chicago Bulls and Boston Celtics. It has played 22 minutes together in the playoffs, outscoring the opposition by nine points in that time.