head-to-head

US /ˌhed.təˈhed/
UK /ˌhed.təˈhed/
"head-to-head" picture
1.

involving two competitors or groups directly opposing each other

:
The two candidates are in a head-to-head battle for the presidency.
They will compete head-to-head in the final round.
1.

in direct opposition or competition

:
The two teams went head-to-head in the championship game.
They debated head-to-head on the controversial issue.