Who holds the record for beating the most undefeated fighters?

Whoever fought the most oponents fighting their pro debut.

 

Frank Moody fought 29 undefeated fighters. Harry Greb 20. Tiger flowers 18.

 

Holmes.

Who beat the most Lineal HW Champs?

 

Lineal at any point... not just when they lost to this fighter.

 

It's Holyfield.

He beat these Lineal HW Champs-

1. Douglas
2. Foreman
3. Holmes
4. Bowe
5. Moorer
6. Tyson x2
7. Rahman

He also drew with Lewis

He also beat these HW world title holders (IBF, WBA, WBC, and WBO only)-

1. Thomas
2. Dokes
3. Mercer (WBO)
4. Ruiz (he also drew with Ruiz)
5. Botha

He also beat these world title holders (IBF, WBA, WBC, and WBO only)-

1. Booze (WBO)
2. Qawi x2
3. Parkey
4. Ocasio
5. Deleon
6. Czyz

He beat 18 different fighters who once had belts that said World Champion on them (IBF, WBA, WBC, or WBO). He went 20-5-2 (11) vs. these men.

Those 5 losses were to Bowe in '92 (a great fight, a close fight), Moorer in '94 (could have went either way, he did drop Moorer), Bowe in '95 (he dropped Bowe and should have finished him in round 6, he was stopped in the 8th), Lewis in '99 (could have went either way), Ruiz in '01 (close). He went 3-5-2 (1) vs. these men. He was over 30 years old in all of these losses. He was 37 vs. Lewis and 38 vs. Ruiz.