HALFTIME

66

70

April 2, 2023

DALLAS MAVERICKS

ATLANTA HAWKS

1

We project the number of points per possession we expect each team to score in the second half based on its projected lineup, each player’s RAPTOR ratings and the current score of the game

1.18

1.21

POINTS PER POSSESSION

POINTS PER POSSESSION

2

We combine the projected number of possessions left in the game for each team with their expected points per possession to generate two independent Poisson distributions, representing the probability that each team will score a given number of points in the game

More likely

110

120

130

140

150

3

We combine the two Poisson distributions into a matrix of all possible game scores, from which we can calculate the likelihood of a win for each team

More likely

Hawks win

Mavericks win

Possible final scores for the Atlanta Hawks

110

120

130

140

150

70.6% chance that the Hawks win

Possible final scores for the Dallas Mavericks

110

120

130

140

29.4% chance that the Mavericks win

150

The Hawks ended up winning this game by a final score of 132-130

We generate each team’s chances to win an overtime period and use those percentages to distribute the odds of tie scores between the two teams

HALFTIME

70

66

April 2, 2023

DALLAS MAVERICKS

ATLANTA HAWKS

1

We project the number of points per possession we expect each team to score in the second half based on its projected lineup, each player’s RAPTOR ratings and the current score of the game

1.18

1.21

POINTS PER POSSESSION

POINTS PER POSSESSION

2

We combine the projected number of possessions left in the game for each team with their expected points per possession to generate two independent Poisson distributions, representing the probability that each team will score a given number of points in the game

More likely

110

120

130

140

150

3

We combine the two Poisson distributions into a matrix of all possible game scores, from which we can calculate the likelihood of a win for each team

Possible final scores for the Atlanta Hawks

110

120

130

140

150

More likely

Hawks win

Mavericks win

70.6% chance that the Hawks win

110

Possible final scores for the Dallas Mavericks

120

130

140

29.4% chance that the Mavericks win

The Hawks ended up winning this game by a final score of 132-130

150

We generate each team’s chances to win an overtime period and use those percentages to distribute the odds of tie scores between the two teams

Infographic explaining how the Poisson portion of FiveThirtyEight's NBA live in-game win probability model works, with halftime of the Atlanta Hawk's game against the Dallas Mavericks on April 2, 2023 used as an example