Commissioner Trolling Abilities

If anyone has the answer or has attempted this I would like to know…

Was hanging out with friends and she busted out some old photos of our league mates and I had the great idea to switch out everyone’s profile pic to their baby photos.
I just assumed that I had the power to do that as commissioner but it seems like Yahoo! doesn’t have that option?
Just trying to see if anyone has tried and if it is possible at all.

I know you can control this on MFL. Don’t know about Yahoo.

I will warn you that some systems have changed what and how avatars are displayed. I changed my Avatar for an ESPN league and could never get it back.

Good luck!