Major women's sport leagues in the United States and Canada represent the top level competitions of team sports for women athletes in those countries. Currently, top women's leagues include the Women's National Basketball Association (WNBA), the National Women's Soccer League (NWSL), National Pro Fastpitch (NPF), the Premier Hockey Federation (PHF), the Women's Flat Track Derby Association (WFTDA), and the National Ringette League (NRL). Some individual sports featuring women are also popular in North America, including tennis, bowling and golf. The Women's Tennis Association (WTA), Professional Women's Bowling Association (PWBA), and Ladies Professional Golf Association (LPGA) were all founded in the United States and host events in the United States and around the world.