Trump cleaned Biden's clock on a few issues, while Biden more frequently hoisted himself on his own petard. The president did a good job of standing back and letting Biden dig himself into a hole. When Trump called him out on previous statements Biden had made, the Democrat merely claimed he never made those statements.

1. Hunter Biden

Trump put the Democrat on the defensive even before the debate began by bringing Tony Bobulinski to the debate as his guest. Bobulinski is the CEO of Sinohawk Holdings, a company he founded with CEFC China Energy and the Biden family. He came forward on Thursday to corroborate the damning emails discovered on Hunter Biden's laptop.

Among other things, Bobulinski claimed that Joe Biden was personally involved in the nefarious business deals Hunter Biden and James Biden (the then-vice president's brother) undertook in foreign countries like Ukraine and China.

"What he said was damning. Regardless of me, I think you have to clean it up and explain it to the American people," Trump told Biden.