FiveThirtyEight.com, an analytics website that's part of ESPN, created a projection system to predict how good each NBA player will be by comparing them to the career arcs of other similar players (pictured above for Kelly Olynyk).
The FiveThirtyEight metric is quite high on the 2015-16 Celtics, picking them to win 48 games. The website's founder, Nate Silver, claims the C's may even compete for the No. 2 seed in the Eastern Conference.
Below is a list of the notable player comparisons FiveThirtyEight made for every Celtic, as well as link to the analysis of each.