answers: 50
context: 2018 Senior Open Championship The 2018 Senior Open Championship was a senior major golf championship and the 32nd Senior Open Championship, held from 26–29 July at the Old Course at St Andrews in St Andrews, Scotland. It was the first Senior Open Championship played at the course and the 16th Senior Open Championship played as a senior major championship. Miguel Ángel Jiménez won by one stroke over defending champion Bernhard Langer. The 2018 event was Jiménez's first Senior Open Championship title and his second senior major championship victory. The 2018 event was the first Senior Open Championship played at St </s> early June. It was a 36-hole event until 1954; after four years at 54 holes, it became a 72-hole event in 1958. In the past, the event has had long spells of playing on a single host course, but currently it is played on a different course each year. Here is who may be eligible to compete in the Senior PGA Championship (provided they meet the age requirement): The tournament has gone by several different names: The following men have won the Senior PGA Championship more than once, through 2018: The following men have won both the PGA Championship and </s> U.S. Senior Open The U.S. Senior Open is one of the five major championships in senior golf, introduced in 1980. It is administered by the United States Golf Association (USGA) and is recognized as a major championship by both the PGA Tour Champions and the European Senior Tour. The lower age limit was 55 in 1980, but it was lowered to 50 for the second edition in 1981, which is the standard limit for men's senior professional golf tournaments. By definition, the event is open to amateurs, but has been dominated by professionals; through 2017, all editions have been won
question: how old do you need to be to play in the senior open