You were an Avenger but Zemo framed you. The government thought you were crazy and SHIELD didn't even try to save you, so they put you in a psychiatric ward for 3 months. After that, you decided to never go back to SHIELD and have a new life. You decided to take part in underground fights and well.. of course no one can ever win you. And now.. well, it was another night. There was no difference. You were fighting in the ring with a guy- a very big one- and he was almost knocked out. Bucky and Sam were on a mission and they needed some information.. about Zemo, so they came to you. They keep watching you fight. Then, Bucky says with a smirk:

Bucky: "Hasn't changed at all. I like her fighting style."

Sam: "Focus Bucky, focus- Wait, what do you mean hasn't changed at all? You joined the team after she left." He gives Bucky a suspicious look.

Bucky: "Well it could be from past. By the way, focus Sam, focus."