probbaly a bug somewhere, but there's a lot of sports related questions popping up on SO, getting voted down real fast and disappearing. probably a glitch in some other stackexchange site? (for example, see this one)
It's a spam bot that keeps posting.
The sport posts are advertisements for a sports streaming service and the 'downvotes' are the result of the posts being flagged by users. See What are the “spam” and “rude or abusive” (offensive) flags, and how do they work?
We don't like spammers here on the Stack Exchange, and this is not a bug. The system is working exactly as designed.