Wales rugby star Louis Rees-Zammit, one of the world's most exciting players, is quitting the sport to pursue his dream of playing in the NFL.The 22-year-old Rees-Zammit has accepted an invitation to join the NFL's international player pathway, his English club Gloucester said Tuesday.Wales coach Warren Gatland said Rees-Zammit, who is a winger and has scored 14 tries in 31 matches for his...