The way sports games are shown
When viewing by sports categories (MLB, NFL, etc.) games, the latest games show on the top of the list. You don't see games that are going on at that time, you see games that are playing the latest. Example, NFL listing shows Monday night games at the top, Thursday night games are last on the list.
tim hansch commented
My Scoreboard is set to NFL. The Buf - LaR game does not appear on the list of maximum amount of games you can see on MyYahoo page.