競り合う
1
to struggle for;to compete with;to vie with
本命と対抗馬が競り合ったお陰で、ダークホースの彼が漁夫の利を得たってわけだ。
Since the favorite and his rival were running against each other a dark horse like him was able to pull out in front.
Other forms
競合う 【せりあう】