Answer: usopens

AnswerCrossword Clue
USOPENS

Major golf or tennis events

USOPENS

Major tourneys

USOPENS

Four of Nicklaus' victories

USOPENS
Nicklaus won four of them
USOPENS
Four of Ben Hogan's titles
USOPENSSports biggies
USOPENSGrand Slam tennis events