Three leads of 25 points or more were surrendered by home teams in the space of the past week and in each case, the team surrendering the leads are playoff teams. If you look at the list I posted, there have been 29 24-point or more comebacks over the last 23 seasons so a little over one per year. 20 of those comebacks have come over the past decade too. Now to be fair to you, I should have been more specific and said that double digit comebacks happen quite frequently in the NBA - I would agree that 28 point comebacks are more rare. However if you willing to grant me that there only a tiny difference between a 24 point comeback and a 28 point one, the do happen fairly regularly and with increasing frequency during the 2000s if you look at the chart. In short, that is quite different than the idea that teams should never surrender 28 point leads. It is not common but it can and does happen. And I will add that as bad as that loss felt, it only counted for one game in the standings.