has any golfer won all 4 majors in 1 year
Grand Slam (golf) Only Bobby Jones has ever completed a Grand Slam. No man has ever achieved a modern era Grand Slam. Tiger Woods won all four events major events consecutively within a 365-day period, but his victories were spread over two calendar years.
Alonso Álvarez de Pineda
The Open Championship The Open Championship, often referred to as The Open or the British Open, is the oldest of the four major championships in professional golf. Held in the United Kingdom, it is administered by The R&A and is the only major outside the United States. The Open is currently the third major of the year, between the U.S. Open and the PGA Championship, and is played in mid-July.
The Open Championship The Open Championship, often referred to as The Open or the British Open, is an annual golf tournament conducted by The R&A. It is one of the four major championships in professional golf, and is the oldest of the four. The Open is traditionally played in mid-July; beginning 2019, with the rescheduling of the PGA Championship to May, the tournament will be the final major of the golf season.