Not quite the same with the LA Rams existing, but the St. Louis Rams did get to play a game against the old Eagles uniforms before the redesign in their innagurral season (as seen by patch)
Tampa Bay Lightning's Hockey Bay USA logo used in the mid 2000's. I'm not sure but it might've been used on ice, similar to Red Wings 'Hockeytown' logo.
This is the Rays, while raising the 2013 Wild Card banner This is during 2011. Can see they moved 2010 over between the 2 light columns Here's UCF, adding Fiesta Bowl to the top left of the scoreboard
I have a Black KC Chiefs Trent Green jersey like this. I'm pretty sure they've never worn something like this. Always wondered if it was just an alternate style to sell to fans or a scrapped idea? Never been able to find anything about it.