Since the NBA playoffs are upon us, we decided to re-examine a playoff angle called the zigzag theory. This angle is to play ON any playoff team coming off of a straight-up loss because these clubs usually play with a greater sense of urgency.
We have studied all NBA playoff games since the 1990-1991 season and the results of this angle by category appear below (all records are ATS)
NBA PLAYOFF TEAMS OFF S/U LOSS – ALL
Home Favorites: 156-162-8, 49.1%
Home Underdogs: 45-37-1, 54.9%
Road Favorites: 28-25-1, 52.8%
Road Underdogs: 194-165-12, 54.0%
This system works much better if the team which lost the last game is now an underdog. These puppies are a cumulative 239-202-13, or 54.2 percent against the number. To try and get an even better winning percentage, we then decided to look at UNDERDOGS ONLY by various point ranges. The results appear below.
NBA PLAYOFF TEAMS OFF S/U LOSS - UNDERDOGS ONLY
+1 to +1 ½: 18-7, 72.0%
+2 to +3 ½: 47-48-2, 49.5%
+4 to +5 ½: 68-55-5, 55.3%
+6 to +7 ½: 44-51-2, 46.3%
+8 or more: 62-41-4, 60.2%
Consistent with our findings from last season, the best plays are either small underdogs of plus one or plus 1 ½, or big underdogs of plus eight points or more. Based on these results, do not be afraid to back an underdog that lost its last game, especially if it falls within one of the prime point ranges we just mentioned.
Finally, we decided to take a look at teams that lost their last game BOTH S/U AND ATS to see if this model produced better possibilities. The results of this analysis appear below.
NBA PLAYOFF TEAMS OFF S/U AND ATS LOSS – ALL
Home Favorites: 136-131-6, 50.9%
Home Underdogs: 34-18-1, 65.4%
Road Favorites: 26-23-1, 53.1%
Road Underdogs: 151-134-5, 53.0%
While the results are not dramatically different from the analysis of teams coming off of a S/U loss - only in three of the categories - it is interesting that home underdogs are hitting at a phenomenal 65.4 percent success rate if they lost their last game both S/U and ATS. Granted, the sample size of 53 occurrences is less than we would like, but this angle bears watching nonetheless.