In 2018-19, the Celtics had all the pieces in place to win a championship.
They had a true superstar in Kyrie Irving, rising stars in Jayson Tatum and Jaylen Brown, other talented scoring options in Gordon Hayward, Marcus Morris, and Terry Rozier, and strong role players in Marcus Smart, Al Horford, Aron Baynes, and Daniel Theis.
The Celtics almost had too much talent, and their chemistry issues ultimately proved to be insurmountable. They lost to the Bucks in five games in the conference semifinals and were left wondering what could have been as the Raptors beat the shorthanded Warriors in the NBA Finals.