Idk if these have been mentioned on the site yet, but I figured I'd throw them out there.
First in the NBA....In what I believe to be the longest head-to-head ATS win streak in pro sports, the NY Knicks have covered in 18 straight games vs the Utah Jazz. Players change, coaches change but the results never seem to. They've covered by an average of 9.39 ppg in these matchups since 2005.
And in the NHL...The Florida Panthers are 1-23 in their last 24 games as a home dog after a win as an underdog. The Panthers seem to struggle to hold on to their momentum after a big win. The average margin of defeat in this situation is exactly 2 goals.