Who has had lots of world title fights without ever winning a title?

I start it off with Rocky Lockridge, with 6, as follows ...

Eusebio Pedroza (2) WBA Featherweight
Wilfredo Gomez WBA Super FeatherWeight
Julio Cesar Chavez WBC Super Featherweight
Tony Lopez (2) IBF Super Featherweight

probably there are guys out there with more.