The new mixed doubles format has stirred controversy in the tennis community.

The new US Open mixed doubles tournament -- featuring shorter matches and a smaller field -- got underway Tuesday, with four teams halfway to a trophy -- and a $1 million prize.

Although Raducanu and Alcaraz were the biggest draw for this tournament as two of the more popular players in world tennis, Draper and Pegula were number one seeds for a reason, and made it count, ru...