Mike Gibson has 28 caps at fly-half, 48 at centre and 4 on the wing and Tim Horan played 62 tests at centre, 2 on the wing and 9 at full-back. Danie Craven mostly played at half-back, but has also started a Test in the forwards at number 8. Matt Giteau, has also shown great versatility throughout his career, played 6 tests at scrum-half, 46 at fly-half, 50 at centre and one on the wing. 2013 IRB Hall inductee Waisale Serevi, although most famous as a sevens player and primarily a fly-half in 15s, also started Tests as a scrum-half, wing and full-back, and came off the bench once as a centre and once as an emergency lock. Rugby sevens Rugby sevens teams have only seven players on the field and can nominate five substitutes. The seven players are split into three forwards and four backs. Scrums are formed with three players who bind together the same as the front row. There are four backs: scrum-half, fly-half, centre, and wing. The scrum-half feeds the ball into the scrum. The other three players form the backline. Since play is much more open in sevens, with rucks and mauls generally kept to a minimum, most sevens players are backs or loose forwards in fifteen-a-side teams. When a team is defending in open play or from a penalty kick, the defending team will often play a line of six defenders across the field, with one player deeper known as the "sweeper" whose role is to field kicks or to tackle attacking players who have broken through the defensive line. See also List of rugby union players by country Rugby league positions Rugby union numbering schemes References Bibliography External links http://news.bbc.co.uk/sport1/hi/rugby_union/rules_and_equipment/6332057.stm Country by country list of the names of player positions SARU Origins of the Game www.rugbyfootballhistory.com Rugby union