Joe Biden might want to think twice about a potential golf face-off with Donald Trump ... No. 45 just recently hit the links with Bryson DeChambeau -- and he was so good, the U.S. Open champ couldn't believe his eyes.
The 78-year-old hooked up with the LIV Golf star sometime before he was nearly killed during a July 13 assassination attempt ... to film a video where the two would try to break a score of 50 on 18 holes from the most forward tees at one of Trump's courses.