The Welterweight Title Jinx
For many years during the 20th Century, reporters commented on the so-called jinx that each Welterweight World Champion faced every time he defended his title for the first time. Young Corbett III, for example, reportedly was the seventh welterweight champion in succession to lose possession of the title in defending it for the first time. His successor Jimmy McLarnin also lost the title in his first defense, to Barney Ross. Then Ross lost his first defense to McLarnin, who in turn once again lost the welter title back to Ross on his first defense, after having won the title from Ross. (By then the papers were saying this was the 12th time the jinx had continued. Somewhere along the line the total number had become distorted.) It took Henry Armstrong to end this jinx.
See also, List of World Welterweight Champions