Dan just started his tenth season in the league.
Ten years is a long time.
Lots of players get injured or killed long before then.
Make it to ten years, and you get you an X on your right sleeve.
There’s a whole ceremony around it.
With the team outfitter sewing the X on your sleeve.
It goes over the V that you got for your fifth year in the league.
Nobody’s gone fifteen years in the league.
After your fourteenth years, you go in the Hall of Fame.
Literally.
Mummified, sealed in a coffin, under a shiny bronze plaque.