The Celtics have clinched their 26th divisional title, and their first since the 2004-05 season. I know I don't write about the Celtics too often on here, but that's mainly because there's not much to say after they play except "KG, Pierce, and Allen were great. Everyone on the team played well. The other team didn't stand a chance. Detroit sucks."
Just to demonstrate how well the Celtics have played this year (and how poorly they've played in years past), they could lose EVERY SINGLE GAME they have left, and finish with their best winning percentage since 1990-91.
The C's have a 4.5 game lead over Detroit for the #1 Eastern Conference seed. The Celtics have 17 regular season games left, Detroit has 16. The Celtics also hold the head-to-head tie-breaker against Detroit, so the Magic Number to clinch home court advantage throughout the playoffs is 12.