The phrase "undefeated champion" means a person or team who has never lost a competition or a match. They have won every battle or contest they have been a part of. Full definition
This might be the best storyline of the night, we have last year's Undefeated Champions of the C0 - Ed Universe — Team Bartlett, going up against a team that is still searching for their first W of the Summer in Team Graham. (allsportsseries.com)
As a reminder to all — Team Darcy finished the first session as Undefeated Champions as they get their 2nd Crown in Franchise history.. (allsportsseries.com)
All Access: Follow the final days of preparation before fight week as undefeated champion Keith Thurman and once - beaten former titlist Shawn Porter square off in a welterweight world title bout on Saturday, June 25th. (sho.com)