AUSTRALIA
World ranking: 5
Titles (including Tri-Nations): 4
Last year: 2nd
Coach: Michael Cheika
Captain: Michael Hooper
SQUAD: Forwards — Allan Alaalatoa, Adam Coleman, Ned Hanigan, Michael Hooper (captain), Sekope Kepu, Tolu Latu, Brandon Paenga-Amosa, David Pocock, Tatafu Polota-Nau, Tom Robertson, Izack Rodda, Pete Samu, Rob Simmons, Scott Sio, Lukhan Tui, Taniela Tupou Backs — Tom Banks, Kurtley Beale, Israel Folau, Bernard Foley, Will Genia, Dane Haylett-Petty, Reece Hodge, Marika Koroibete, Jack Maddocks, Nick Phipps, Joe Powell, Matt Toomua
ARGENTINA
World ranking: 10
Titles: 0
Last year: 4th
Coach: Mario Ledesma
Captain: Agustin Creevy
Squad: Forwards: Matias Alemanno, Rodrigo Bruni, Marco Ciccioli, Agustin Creevy, Lucas Favre, Diego Fortuny, Santiago Garcia Botta, Santiago Grondona, Marcos Kremer, Ignacio Larrague, Tomas Lavanini, Juan Manuel Leguizamon, Pablo Matera, Vivas Mayco, Santiago Medrano, Franco Molina, Julian Montoya, Javier Ortega Desio, Guido Petti, Nahuel Tetaz Chaparro, Juan Zeiss, Juan Figallo Backs: Gonzalo Bertranou, Emiliano Boffelli, Sebastian Cancelliere, Tomas Cubelli, Jeronimo de la Fuente, Bautista Delguy, Joaquin Diaz Bonilla, Bautista Ezcurra, Santiago Gonzalez Iglesias, Martin Landajo, Juan Cruz Mallia, Matias Moroni, Ramiro Moyano, Matias Orlando, Nicolas Sanchez.
NEW ZEALAND
World ranking: 1
Titles: 15
Last year: 1st
Coach: Steve Hansen
Captain: Kieran Read
Squad: Forwards — Dane Coles, Codie Taylor, Nathan Harris, Liam Coltman#, Joe Moody, Owen Franks, Tim Perry, Karl Tu’inukuafe, Ofa Tuungafasi, Sam Whitelock, Scott Barrett, Brodie Retallick, Sam Cane, Shannon Frizell, Jackson Hemopo, Ardie Savea, Liam Squire, Luke Whitelock, Kieran Read.
Backs — TJ Perenara, Aaron Smith, Te Toiroa Tahuriorangi, Beauden Barrett, Damian McKenzie, Richie Mo’unga, Anton Lienert-Brown, Sonny Bill Williams, Ngani Laumape, Ryan Crotty, Jack Goodhue, Jordie Barrett, Rieko Ioane, Nehe Milner-Skudder, Waisake Naholo, Ben Smith.
SOUTH AFRICA
World ranking: 6
Titles: 3
Last year: 3rd
Coach: Rassie Erasmus
Captain: Siya Kolisi
Squad: Forwards — Cyle Brink, Jean-Luc du Preez, Thomas du Toit, Pieter-Steph du Toit, Eben Etzebeth, Steven Kitshoff, Siya Kolisi (captain), Francois Louw, Wilco Louw, Frans Malherbe, Malcolm Marx, Bongi Mbonambi, Franco Mostert, Tendai Mtawarira, Sikhumbuzo Notshe, Marvin Orie, RG Snyman, Akker van der Merwe, Marco van Staden, Warren Whiteley.
Backs — Lukhanyo Am, Ross Cronje, Faf de Klerk, Aphiwe Dyantyi, Andre Esterhuizen, Elton Janjies, Jesse Kriel, Willie le Roux, Makazole Mapimpi, Lionel Mapoe, Lwazi Mvovo, Embrose Papier, Handre Pollard, Ivan van Zyl, Damian Willemse.