Celtics extend winning streak to three after 109-106 win over Grizzlies

On a night with all 30 teams playing, tonight’s Celtics-Grizzlies game — with all due respect to OKC-Detroit — might have been the marquee contest. The Celtics led for most of the fourth quarter and staved off a late Memphis comeback to win 109-106.

Even without the hulking presence of Steven Adams, Joe Mazzulla opted to start the double-big lineup of Grant Williams and Al Horford. Memphis opened with a balanced scoring attack, with each of the five starters scoring on their first five buckets. Conversely, Marcus Smart scored 10 of Boston’s first 12 points. He then had back-to-back highlight-reel assists, the first a one-handed flip to Jaylen Brown, and the second a wraparound bounce pass to Jayson Tatum.

The Grizzlies hit five threes and led 34-28 after the first quarter. After Santi Aldama hit a three to put Memphis up 40-31, the Celtics proceeded to go on a 20-0 run. They scored on each of their first 10 offensive trips to open the second quarter. Their offense was unstoppable, looking like a continuation of Saturday night’s shooting clinic at MSG.

But then they went cold to close the period, not converting on a field goal in the last 3:50. Jake LaRavia and Ja Morant hit a few threes while Dillon Brooks played tenacious defense and got an open court steal that turned into a Brandon Clarke dunk. Boston led 65-54 at halftime.

Tatum scored 19 of his 25 first half points during the second quarter. He only shot 2 of 9 from three, but converted on 7 of 9 free throws. The Celtics hit nine threes, dished out 17 assists, and shot 52 percent from the field while limiting the Grizzlies to 40 percent shooting. But Memphis, who leads the league in offensive rebounding percentage, grabbed seven of them for 13 second chance points.

Morant, shooting 47 percent from deep, hit two early third-quarter threes, but each time Memphis went on a run, Boston responded. Smart had a world-class flop that drew a foul on the screen-setting Clarke then hit a 10-foot jumper on the other end. Horford drilled a three then slammed home an alley oop to put the Celtics up 80-68 at the 5:33 mark.

Then the tides turned. In the last three minutes, the Celtics missed six shots and had two turnovers. A John Konchar three punctuated a 10-0 run that put Memphis up 85-84 going into the fourth quarter.

With the game tied at 90 and 8:42 remaining, Tatum splashed a three, Brown found a driving lane, Smart converted on an and-1, then Tatum hit a floater that put Boston up by…