<P> Unlike the mainstream men's and women's (until 2013) Grand Slams, the senior version (as recognized by the Champions Tour) now contains five events, arguably making a senior Grand Slam a greater accomplishment than in mainstream men's golf . </P> <P> In the current order of play, the five majors are: </P> <Ol> <Li> The Tradition (ending on the third or fourth Sunday in May, depending on the calendar) </Li> <Li> Senior PGA Championship (one week after The Tradition; ending the day before the U.S. holiday of Memorial Day, observed on the last Monday of May) </Li> <Li> Senior Players Championship (ending on the last Sunday in June or the first Sunday in July, depending on the calendar) </Li> <Li> U.S. Senior Open (ending on the Sunday in July two weeks before The Senior Open Championship) </Li> <Li> The Senior Open Championship (ending on the last Sunday in July) </Li> </Ol> <Li> The Tradition (ending on the third or fourth Sunday in May, depending on the calendar) </Li>

Who has won all 4 major golf tournaments