The term 'BIG TOURNAMENTS' can be broken down into two crossword solutions: OPENS (5 letters). The term 'OPENS' refers to major golf tournaments, such as the U.S. Open and the British Open. These tournaments are some of the most prestigious events in the sport, and they attract the best players from around the world. They are also some of the most lucrative events in golf, with large prize pools and lucrative sponsorship deals.