By Zach Koons The Browns running back is confident that his current teammate will be successful, no matter where he ends up in the future. View the original article to see embedded media. Browns running back Nick Chubb sent a positive message to teammate Baker Mayfield amid speculation that the quarterback won’t be on Cleveland’s roster much longer. Speaking to reporters this week, Chubb called Mayfield one of his “best friends” and explained why he believes the former No. 1 pick will be successful no matter where he ends up in the future. “He’ll still always be one of my best friends. He’s a …