In Game 2, the Lakers led 113-111 with 18 seconds left when Gerald Henderson stole a James Worthy pass to score a game tying layup and the Celtics eventually prevailed in overtime 124-121.

In Game 3, the Lakers raced to an easy 137-104 victory as Magic Johnson dished out 21 assists. After the game, Larry Bird said his team played like "sissies" in an attempt to light a fire under his teammates.

In Game 4, the Lakers had a five-point lead with less than a minute to play, but made several execution errors as the Celtics tied the game and then came away with a 129-125 victory in overtime. The game was also marked by Celtic forward Kevin McHale's takedown of Laker forward Kurt Rambis on a breakaway layup which triggered the physical aspect of the rivalry. Kareem Abdul-Jabbar would go after Larry Bird later on in the third quarter, and 1981 Finals MVP Cedric Maxwell further antagonized the Lakers by following a missed James Worthy free throw by crossing the lane with his hands around his own neck, symbolizing that Worthy was "choking" under pressure. Also, Bird pushed Michael Cooper to the baseline following the inbound play during the second quarter.

In Game 5, the Celtics took a 3-2 series lead as Larry Bird scored 34 points. The game was known as the "Heat Game", as it was played under 97-degree heat, and without any air conditioning, at Boston Garden. The Celtics did not warm up with their sweat pants on because of extreme heat, and oxygen tanks were provided to give air to exhausted players.

...
Wikipedia