NBA playoff predictions: Who advances to East finals?

Which two teams will win the Eastern Conference semifinals, and how many games will each series go?

Our ESPN Forecast panel predicts Cavaliers-Raptors and Sixers-Celtics.

Note: All predictions made before Game 1 of each series.

(1) Raptors vs. (4) Cavaliers

Likelihood of winning series

• ESPN Forecast: Raptors 54 percent likely to win; Cavs 46 percent

• Basketball Power Index: Raptors (88 percent)

• Fan panel: Raptors (53 percent)

• 538: Raptors (71 percent)

More:

• FiveThirtyEight: There is absolutely, positively, no way LeBron can keep this up

• Experts' picks for the conference semifinals

Game 1: Tuesday | 8 p.m. ET, TNT

(2) Celtics vs. (3) 76ers

Likelihood of winning series

Predictions published before Game 1.

• ESPN Forecast: 76ers 62 percent likely to win; Celtics 38 percent

• Basketball Power Index: Celtics (51 percent)

• Fan panel: 76ers (63 percent)

• 538: 76ers (71 percent)

More:

• Celtics' Brown doubtful for Game 1 vs. 76ers

• Indispensable Horford now has to deal with The Process

To join the fan panel, click here. ESPN Forecast is conducted in collaboration with The Wharton School and Microsoft Research.