head-to-head

even or close in a race or competition or comparison

• “the horses ran neck and neck”
• “he won nip and tuck”

involving two persons; intimately private

• “a tete-a-tete supper”
• “a head-to-head conversation”

inconclusive as to outcome; close or just even in a race or comparison or competition

• “as they approached the finish line they were neck and neck”
• “the election was a nip and tuck affair”