BOSTON -- Celtics guard Payton Pritchard seized the opportunity to send the Mavericks back to their locker room in discouraging fashion just before halftime in Game 5 of the NBA Finals on Monday night.

Pritchard, who checked in for Derrick White with four seconds left in the first half, drained an insane half-court heave just before the buzzer sounded. Hitting nothing but net, Pritchard's deep, deep 3-pointer gave the Celtics a 67-46 lead heading into the third quarter and prompted a warranted celebration from Boston's bench, which mobbed the 6-foot-1 guard at center court.

Check out Pritchard's timely trick shot here, per ESPN:

Similarly, Pritchard connected on a pivotal deep three in Game 2 of the series, which head coach Joe Mazzulla highlighted afterward.

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Entering the season, Pritchard was on the hunt for redemption after logging a career-low 13.4 minutes through 48 appearances. Boston extended the four-year veteran by signing Pritchard to a $30 million contract extension, giving him the opportunity he'd long been awaiting and the Oregon product hasn't squandered the opportunity since receiving an upgraded role.

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Pritchard has averaged 6.6 points, 2.2 assists and 2.1 rebounds entering the potential title-clinching duel with Dallas at TD Garden, shooting 41.3% from the field and 37.3% from three.

However, no shot has been as huge for either Pritchard or the Celtics.

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Featured image via Peter Casey/USA TODAY Sports Images