Skip to main content
Come Fan with UsSunday, June 21, 2026

Projection Considers Miami Heat Substantial Favorite Over Boston Celtics

While we wait for Las Vegas to weigh in on the Miami Heat vs. Boston Celtics series -- and as we process the results of Miami Beat vs. Boston Celery -- we can look to a projection of how the series will go based on regular season performance.

The log5 projection system, popularized by Bill James in baseball and Dean Oliver in NBA circles, uses teams’ Pythagorean winning percentage to determine win probability on a game-by-game basis. We can extrapolate that out for a series by figuring for all of the potential outcomes of each game. Pythagorean winning percentages relies on total points scored and total points allowed, which has been relied upon as the best measures of postseason success.

Here’s what the log5 projection says about Heat vs. Celtics.

Mia-bos-log5_medium

According to log5, the Heat have a 64 percent probability of winning the series, with the most likely outcome being Heat in seven. The Heat actually claim the three most likely scenarios, with a nearly 20-percent probability of winning in five, which would be a shocking outcome given the popular sentiment.

Pythagorean winning percentage doesn't take into account specific matchups, and it's worth noting that the log5 system made the Orlando Magic heavy, heavy favorites over the Atlanta Hawks. The Hawks knocked out the Magic 4-2 on Thursday.

Be sure to follow our Heat vs. Celtics hub for full series coverage.

See More:

More in General

GeneralFromPosting and Toasting
An SB Nation New Yorker needs our helpAn SB Nation New Yorker needs our help
GeneralFromPosting and Toasting
General
Sabastian Sawe breaks 2-hour barrier, shatters marathon world recordSabastian Sawe breaks 2-hour barrier, shatters marathon world record
General

The mythical two-hour mark was broken at the London Marathon.

By Bernd Buchmasser
A Huge Dog
THE HISTORY OF CHARGING THE MOUND, EPISODE 1THE HISTORY OF CHARGING THE MOUND, EPISODE 1
Play
General
Super Bowl 60 coin toss resultsSuper Bowl 60 coin toss results
General

The Seahawks and Patriots will open the Super Bowl with the coin toss to determine who starts with the ball. We have the full coin toss results for Super Bowl 60.

By David Fucillo
General
Marc Marquez completes a comeback for the agesMarc Marquez completes a comeback for the ages
General

MotoGP’s Marc Marquez completed a comeback for the ages with his 2025 title

By Mark Schofield
General
How to make sure SBNation.com appears in your Google search resultsHow to make sure SBNation.com appears in your Google search results