Celtics forward Jayson Tatum, left, looks to work around a Miami Heat defender on March 30 in Boston. (AP file photo)

MIAMI — He grew up in Portland, basketball in his blood. Wasn’t exactly a big-time recruit before eventually playing some college ball in the West Coast Conference.

Took a circuitous route into coaching, guided along the way by one of the game’s legendary sideline bosses. And last summer, he was part of the brain trust that helped USA Basketball win Olympic gold.

That is Erik Spoelstra’s story.

That is also Ime Udoka’s story.

There is enormous respect between those men, who have known one another for decades and have deep ties. Spoelstra coaches the Miami Heat, Udoka is in his first season coaching the Boston Celtics, and one of them will be representing the Eastern Conference in the NBA Finals. Game 1 of the East title series is tonight, the top-seeded Heat playing host to the second-seeded Celtics.

“We have great respect for what they’ve done during the regular season, to develop the right habits,” said Spoelstra, now in his 14th season after taking over as Miami coach for Hall of Famer Pat Riley. “And like I said, this is the way it should be — the two teams that played most consistently at the top of the East for most of the year, and we’re meeting in the conference finals to figure it out.”

The Heat needed five games to get past Atlanta in Round 1, then six games to oust Philadelphia in the East semifinals. Boston swept Brooklyn in Round 1, then ended Milwaukee’s reign as NBA champions by finishing off a seven-game series win in the other East semi that ended Sunday.

It’s a rematch of the 2020 East finals, held in the restart bubble at Walt Disney World, when Miami topped Boston 4-2 to earn a berth in the NBA Finals. That was the third East finals loss in a four-year span for members of the Celtics — and many of the players from some of or all those defeats, like Jayson Tatum, Jaylen Brown and Marcus Smart, are Boston’s core today.

“This is the group I feel like is poised enough to get it done,” Brown said. “I feel like everything that we’ve overcome — all these battles and challenges and adversity we’ve been through this season, as well as the challenge that we just had overcoming the defending champions — I think that we are prepared. I think we’re ready to take that next step. We’ve just got to go out and take it.”