Question: Who has the most home runs in a home run derby?
Disambiguated questions and answers: question: Who has the most home runs in a home run derby n a single round?
Who has the most home runs in a home run derby (single-derby home runs)?
Who has the most all-time home runs in home run derby?
answer: Vladimir Guerrero Jr.
Vladimir Guerrero Jr.
Joc Pederson
Natural Questions answer: Todd Frazier (from the Wikipedia article "Home Run Derby")