Loosehead vs Tighthead Prop: What's the Difference?

Props wear the 1 and 3 jerseys and form two-thirds of the front row, but they are not interchangeable. The loosehead (1) and the tighthead (3) do very different jobs, and it comes down to which side of the scrum they pack down on.

Loosehead prop (No. 1)

The loosehead packs down on the left of the front row, so their head is on the loose — outside — of the opposing tighthead. Because of this angle, the loosehead's main job is to give their hooker a stable platform and keep the scrum up. They tend to be slightly more mobile and are often more visible around the field in open play.

Tighthead prop (No. 3)

The tighthead packs down on the right, with their head tight between the opposition loosehead and hooker. This is widely seen as the toughest, most technical position on the field. The tighthead absorbs the full force of the opposition scrum and is responsible for holding it steady. A dominant tighthead can win penalties and dismantle an opposition scrum almost single-handedly.

Why the difference matters

Scrummaging is a battle of angles and technique, not just brute strength, which is why looseheads and tightheads train for different roles and are rarely swapped. Tightheads in particular are among the rarest and most valuable players in the game — and often the heaviest, as we explore in our look at the heaviest rugby players ever.

Both props are essential to a winning pack. Get to grips with the rest of the team in our rugby positions explained guide.