An Argentine journalist's 13-year quest to do right by Guillermo Vilas

Eduardo Puppo tried to prove that Guillermo Vilas was erroneously denied the No. 1 ranking in the 1970s.

source https://www.espn.com/tennis/story/_/id/29237076/an-argentine-journalist-13-year-quest-do-right-tennis-legend-guillermo-vilas