Second rows are considered the engine of rugby scrums and is a position traditionally made up of the toughest, most robust men each country has to offer and as you will see they often make countless great leaders.
They need to be big, powerful men, able to lead the physical confrontations and also to offer an option in the lineout.
We’ve ranked our top ten of all-time; let’s see if you agree with our selection and vote for your Number One…
RUCK POLL
10. Alun Wyn Jones
Now his countries second most capped player of all-time with 113 Test caps to his name, the Wales captain has grown into an inspirational and talismanic figure for Welsh Rugby.
The second-row enforcer played an integral role in Wales 2008 Grand Slam win and has won an impressive nine British & Irish Lion Test caps, becoming one of only 7 Lions players to have beaten South Africa, Australia and New Zealand.
Did you know: He is Ospreys top scoring forward of all-time.
9. Brad Thorn
A rugged and physical presence, Brad Thorn holds the distinction of having represented Australia at rugby league and New Zealand at rugby union.
The all-action lock made his New Zealand bow against Wales in 2003 and would go on to gain selection for the 2003 Rugby World Cup before eight years later being part of the 2011 Rugby World Cup-winning All Black.