GSH
03-06-2009, 10:28 PM
[Note: Besides giving some general information, there is a follow-up to Pop's decision to rest the Big 3 in Denver.]
I saw that the average winning percentage for teams on the second night of a back-to-back is about .425. That includes title contenders all the way down to lottery teams. Without going into painful detail, it means that even the best teams do much, much worse on the 2nd night of B2B's. It also shows that the difficulties the Spurs have had with B2B's is not just because they are old.
But then I had a "Hey, wait a minute" moment about the way that stat is calculated. Some nights, both teams are playing the second night of a B2B. Since one team has to win and one has to lose, the average winning percentage for those games is always .500, which skews the numbers upward. (It happens a lot more often than I would have thought.) So I went through the schedules and eliminated the games where both teams are playing second nights.
So what happens when one team is on the second night of a B2B, and the other team isn't? The average winning percentage is just .375. That has to make it one of the best predictors of a loss in the NBA, outside of extremely obvious mis-matches. So much so that the worst teams in the league have a reasonably good chance against the best, when the better team is on a second night. I knew the numbers were bad, but I wouldn't have guessed that they were that overwhelmingly bad.
So when Pop gets upset because the Spurs get scheduled for a night game followed by an afternoon game, with travel time in between, he has good reason. Those games are extremely difficult to win, no matter who the opponent is. The adjusted B2B statistics above give a different perspective to Pop's decision to rest the Big 3 in Denver. With less than a full day in between those two games, and Denver being a good team, the chances of winning were never very good. Fielding a fresh group of players probably gave the Spurs just about as good a chance of winning, even without Manu and Tim being banged up.
If the logic that a back-to-back affects an older team more is true, then getting cheated out of a half-day of rest would have to be a serious disadvantage for the Spurs, especially if the other team has had a full day or more of rest. I know the league looks at the number of B2B's that each team plays. But I wonder if they consider whether the opponents are also on the second day of a B2B?
I saw that the average winning percentage for teams on the second night of a back-to-back is about .425. That includes title contenders all the way down to lottery teams. Without going into painful detail, it means that even the best teams do much, much worse on the 2nd night of B2B's. It also shows that the difficulties the Spurs have had with B2B's is not just because they are old.
But then I had a "Hey, wait a minute" moment about the way that stat is calculated. Some nights, both teams are playing the second night of a B2B. Since one team has to win and one has to lose, the average winning percentage for those games is always .500, which skews the numbers upward. (It happens a lot more often than I would have thought.) So I went through the schedules and eliminated the games where both teams are playing second nights.
So what happens when one team is on the second night of a B2B, and the other team isn't? The average winning percentage is just .375. That has to make it one of the best predictors of a loss in the NBA, outside of extremely obvious mis-matches. So much so that the worst teams in the league have a reasonably good chance against the best, when the better team is on a second night. I knew the numbers were bad, but I wouldn't have guessed that they were that overwhelmingly bad.
So when Pop gets upset because the Spurs get scheduled for a night game followed by an afternoon game, with travel time in between, he has good reason. Those games are extremely difficult to win, no matter who the opponent is. The adjusted B2B statistics above give a different perspective to Pop's decision to rest the Big 3 in Denver. With less than a full day in between those two games, and Denver being a good team, the chances of winning were never very good. Fielding a fresh group of players probably gave the Spurs just about as good a chance of winning, even without Manu and Tim being banged up.
If the logic that a back-to-back affects an older team more is true, then getting cheated out of a half-day of rest would have to be a serious disadvantage for the Spurs, especially if the other team has had a full day or more of rest. I know the league looks at the number of B2B's that each team plays. But I wonder if they consider whether the opponents are also on the second day of a B2B?