Darts bans transgender players in Women's only events in latest victory for female sports
Findings have identified numerous physical differences between sexes that combine to create a cumulative advantage for male competitors
Golf star kicked out of Masters after breaking strict rule
Mark Calcavecchia won't be playing at the tournament
Defending champion out of Grand National 12 months after 33-1 outsider stunned the world
Nick Rockett won't be involved in the big event this year
