The crowd gave him a standing ovation when highlights of his career were shown on the video board above center court during a timeout with 5:33 left in the first quarter. At the Miami bench, he raised his left hand in recognition.
"When I saw it, just all those emotions came streaming back from all the great things we did here," Allen said. "I'll always be a Celtic in my mind."
Allen entered the game about a minute after the tribute and was booed when he touched the ball. The boos came down again when he took two free throws — missing the first, making the second — three minutes into the second quarter.
Now the Celtics have neither member of their starting backcourt from the past five seasons, Allen and Rondo.
Rondo's injury "puts this team and the rest of the guys in a position to be ready to step up," Pierce said. Sunday's win "was a perfect example. We showed we are capable."
NOTES: It was Miami's first game in Boston since it won Game 6 of the Eastern Conference finals behind James' 45 points. ... James and Chris Bosh each had 16 rebounds for the Heat. ... The last time the Celtics played consecutive double-overtime games was on March 11 and 13, 1951.
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