The loose forward or lock (numbered 13) is the only forward in the third (last) row of the scrum. They are usually among the fittest players on the field, covering the entire field on both attacking and defending duties. Typically they are big ball-runners who can occasionally slot in as a passing link or kick option; it is not uncommon for loose forwards/locks to have the skills of a Stand-off/five-eighth and to play a similar role in the team.
