The first presidential debate predictably had moments of tension between the two candidates that devolved into personal attacks, including one moment that had President Joe Biden and former President Donald Trump in a lengthy exchange over who is a better golfer.

The exchange began when CNN moderators asked the two candidates how they would quell voter concerns over their ages, pointing to Biden’s legacy as the oldest president in U.S. history at 81 years old. Trump brushed off concerns about his age, noting that he “aced” two cognitive tests while he was president and challenging Biden to do so the same.