So I mentioned back on Aug 9 that 'home' teams in the bubble has been winning and covering at an astonishing rate and some media outlets have picked up on it like the article below...
No one knows for sure why home-court advantage still seems to exist.
fivethirtyeight.com
Even shooting% was better for the 'home' teams
But if you dive a bit deeper, that effect largely wore off by Aug 12 and since then 'home' teams have gone 23-24 SU and 23-22-2 ATS.
A number of reasons have been suggested (uniforms, home bench location, home intros etc) the only one that makes sense to me is game start time which they have tried to keep like normal so late starts for west coast teams. My theory is that the effect wore off after all teams had spent a couple weeks in the same time zone. It should be noted however, that some western teams have tried to stick to their usual time zone routine, waking and staying up later. More research would confirm this.
I suspect the same thing is happening in the NBA where 'home' teams in the bubble had performed better early on but the effect has now largely worn off.
How does this help us handicap? It probably doesn't right now because I missed the boat, but I think it does shed some light on the effects of time zone changes on athletic performance. Also, Ill keep it in mind for the next 100yr pandemic in 2120.