Sixers coach Doug Collins knew Game 5 could be a letdown game for his team.
They were up 3-1 on a Bulls team that looked down and out thanks in large part to devastating injuries to two crucial players in Joakim Noah and Derrick Rose.
Collins warned his team that Tuesday's game had to be as important to Philadelphia as it was to Chicago. Instead, the Sixers were unable to put together another second-half comeback and fell 77-69.
Still, Collins' squad has to win just one of the next two games in order to advance to the next round as just the fifth eight-seed ever.
"I've been around a long time," Collins said. "You can't let one game all the sudden get you standing in the wrong direction. We didn't expect to beat the Bulls in four straight. They're is a damn good team."
Collins also pointed out that the Sixers were just one shot away from making it a closer game. Andre Iguodala set up for a three-pointer with roughly 40 seconds left, but missed the open shot that would have made the game 77-72.
"If 'Dre knocked that three down, it woulda been a five-point game with about a minute to play," he said. "I told our guys there should be no discouragement. The Bulls did what they had to do here tonight -- they won the game."
Sixers power forward Elton Brand admitted it's not always easy to pick up win No. 4.
"The close-out game is the toughest game to win in the series," he said. "We know what it takes. We know the intensity and the focus it's going to take. We'll watch some tape and regroup and we'll get it on the home court in front of our fans. We feel confident."
The series moves back to Philadelphia Thursday night, with a potential Game 7 looming back in Chicago.
When a reporter proposed the idea that Game 6 was a must-win, Collins agreed.
"I don't want to come to Game 7," he said.