The NFL: Welcome to parity
This phenomenon was first brought to the internet back in 2010, and then again last year. It happens more often than not, but it's interesting to see how long it takes for the cycle to be complete.
Before last night, the Colts were the only team to have beaten the Broncos, as well as the only team with a win over the Seahawks.
Check it out, via Deadspin: