According to Pat Riley law, the defense should never rest on his court.

But that hasn't been the case so far this preseason, particularly on the perimeter, where the Heat's first three opponents continually have been getting wide-open looks and knocking them down at a rate of 42.5 percent from the field (40.5 from 3-point range).

"I have to show great patience because we only have two players with more than two years here," Riley said after a rigorous practice session at AmericanAirlines Arena on Sunday morning. "Everywhere I've been, New York and in Miami, it's taken a month for them to understand the level of intensity, the level of competitiveness, the level of effort.