[1] Grey was a keen sportsman and soon became one of the principals of the Druids club alongside Llewelyn Kenrick and the Thomson brothers, George and David.
[1] In 1876, he also took part in trials organized by Kenrick to select Welsh players to represent their country in a match against Scotland.
[4] In 1877, Grey, described as "a busy player and tremendous worker",[1] played (and scored) for Druids in the inaugural Welsh Cup tie,[5] contributing £15 to the FAW's fund to purchase a trophy.
[6] Grey's second international appearance came a week before the Cup Final, on 23 March 1878, in a 6–0 defeat by Scotland at the original Hampden Park.
In 1889, a Welsh Cup match between Wrexham and Westminster Rovers became particularly violent and Grey was called upon to lecture the players about their behaviour.