powerful legs to drive the scrum forward. Since the game has become professional, non-specialist props or hookers cannot play in the front row. If, through sendings-off or injuries, a team does not have enough specialist front row players, the scrums become 'uncontested' (i.e. no pushing is allowed and the team putting the ball into the scrum wins it). On their own scrum, the loosehead's role is to provide the hooker with a clear view to strike the ball, while the tighthead tries to keep the scrum stable. When the opposition is putting the ball in, the tighthead attempts to disrupt the opposing hooker or loosehead, making it difficult for them to win the ball. Props in the International Rugby Hall of Fame include: Jason Leonard (England and Lions), Syd Millar (Ireland and Lions) and Wilson Whineray (New Zealand). Utility players Players who have the ability to play a number of positions in a team are called utility players. Utility players can be seen as "Jack of all trades" and they generally occupy the reserve position in a team. For this reason, many try to avoid being labelled as utilities. Players in the forward positions are generally more specialised than those that play in the backs. However, flankers can usually play number eight, like Grégory Alldritt, David Pocock and Kieran Read. Many players may also be capable of playing lock as well as a back-row position, with several modern examples being Sébastien Chabal, Maro Itoje, Courtney Lawes, Steven Luatua, and Cameron Woki, all with international caps in both rows of the scrum. The front row positions are usually very specialised, although some props can play both sides or even hooker. South African captain and IRB Hall of Fame member John Smit has played test matches in every front row position. Another IRB Hall member to have played multiple forward positions is 2013 inductee John Thornett, an Australian utility forward who played at flanker, number 8, lock and prop for the Wallabies from 1955 to 1967. Utility backs tend to cover a greater number of positions, with players commonly switching between scrum-half and fly-half, fly-half and centre or wing and full-back. Another famous utility player was Austin Healey, who started and played test matches for England and club matches for Leicester Tigers at fly half, scrum half, full back and winger. Among members of the International Rugby or IRB Halls of Fame,