I'm not a huge sports fan but I'll watch a bit here & there...
Currently I'm watching the big games of the Rugby World Cup, I also watch the 6 Nations rugby when it is on too.
I sometimes watch the latter stages of the World Cup
(football/soccer) although not always.
When the Olympics is on I'll usually watch the Athletics, Swimming & Cycling. In the past I've also watched some of the Winter Olympics but haven't for many years now.
I usually also watch some of the tennis at Wimbledon, I used to watch a lot of it but these days I'll just tune in for the big matches.
I got into watching the NBA a few years ago when they used to broadcast a few games on one of our UK channels. They stopped doing that but I did subscribe to League Pass for a couple of years... I slowly seem to have lost interest though.
Having said I'm not a huge sports fan, I guess I do watch a fair amount of sports overall...