Jayson Tatum strutted into the tunnel at TD Garden,

raising both arms elatedly as adoring fans belted shrieks of joy celebrating his cutting layup

at the buzzer of Boston’s 115-114 win over Brooklyn.

One woman held a white poster board with a message scribbled in green that said: “In Tatum We Trust”.

Tatum showed exactly why on that final play in front of the sellout crowd of 19,156,

closing out a sequence that perfectly illustrated the level of teamwork

the Celtics needed to overcome a 15-2 run at the start of the fourth quarter

and an unconscious 39-point effort from Boston villain Kyrie Irving — to seize a 1-0 lead in this first-round series.

That play leads off our five takeaways as we try to catch our breath

in anticipation of Wednesday’s Game 2 at TD Garden:

Celtics-Nets Game 1