head-to-head

“For years, Southwest sought to avoid head-to-head competition with big, traditional airlines.”

“Fat Bear Week, which started in 2014, is an annual competition where brown bears from Alaska's Katmai National Park face off in head-to-head matchups -- similar to a March Madness bracket -- with people around the world voting for who they believe is the fattest of the bunch, the National Park Service said in a press release.”