What was then viewed as a bad loss for the Rockets morphed over the ensuing three weeks as the Heat reeled off an NBA-best 13-game winning streak before succumbing to the Philadelphia 76ers last Saturday night. "Every single night it's a challenge," Heat coach Erik Spoelstra said. During the streak the Heat were second only to the San Antonio Spurs in defensive rating (99.9) and second to the Golden State Warriors in net rating at 10.5.