You're assuming Jay has a 30 year mortgage on that home? Considering how much money he makes now, I'd be willing to be the home is already paid for, if not, I bet it will be by the time he retires.
No no no, bro! I was talking in general! I'm sure Jay has paid that house in cash when he decided to buy it. But I'm sure there are many athletes that are not going to pay instantly their houses and cars or whatever - For example Flex which I pointed out with comments about blowing out kidneys or crashing your car....
And the same probably goes with other athletes also; the will to show takes over and you have to have all those toys and houses around you and you make unreasonable decisions. And if you are an athlete without education or any kind of other income then after you get hurted you got nothing with you could pay those mortages etc.