One of the most shocking developments in recent Boston Celtics history happened during the summer of 2012. Just two months after losing to the Miami Heat in the Eastern Conference Finals, Ray Allen broke up the Celtics’ “Big Three” by signing with the Heat in free agency, turning down more guaranteed money from Boston in pursuit of another ring.

The move worked out for Allen, who made back-to-back NBA Finals with Miami and retired after winning his second career championship in 2014. Many Celtics fans and players never forgave him, however, for joining one of Boston’s biggest rivals.

On an episode of Dwyane Wade’s podcast earlier this year, Celtics legend Rajon Rondo opened up about his former teammate’s painful departure.

“It was the Celtics and there was the Heat, and it was smoke every time we saw each other. So we at war. That’s the mindset,” Rondo said. “And then one of our troops goes and joins the opps. How would you feel?”

Rondo also described his relationship with Allen in more detail. They were teammates for five years, shared a backcourt and won a championship together, so they were close and friendly. They weren’t best friends, however, given that Allen was a decade older than him and tended to hang out with Paul Pierce and Kevin Garnett.

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Pierce and Garnett were traded a year after Allen left, breaking up the “Big Three” for good. That put the team in Rondo’s hands for a few years until he was also traded, paving the way for Isaiah Thomas and a new generation of Celtics.

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