This app was mentioned in 5 comments, with an average of 1.20 upvotes
If you are on Android, I use the Scores widget all the time (on my Nexus 7 tablet). I actually have two widgets on my home screen, one showing all my favourite hockey, baseball and college football teams, and another widget showing all baseball, hockey and top 25 college football teams.
It was nice when you could have it on the lock screen before Lollipop changed that.
I do not know of a transparent sports widget because I would be interested in this as well, but The Score has a small and a larger black widget for sports scores.
Found this scores widget and it can be made transparent but have not tried it yet. https://play.google.com/store/apps/details?id=com.furyapps.scoreswidget
Scores widget to follow your teams. I don't have an installed on my phone, the watch one works just fine for what I need. https://play.google.com/store/apps/details?id=com.furyapps.scoreswidget
Navmusic and NavCasts from Turndapage. Both are worth the price. Well designed apps. https://play.google.com/store/apps/dev?id=5304767307318254576
Looking for Twitter if you're a Twitter user. Obviously not my main Twitter client, but when I'm not in my phone it's useful for sending a quick tweet. https://play.google.com/store/apps/details?id=com.droibit.looking2