Harlequins' Sam Smith, a try-scorer for England U20s in their IRB Junior World Championships semi-final defeat to Australia, drops to the bench for their third-place play-off against South Africa at Newell's Old Boys FC in Rosario today (4.45pm local time).

His clubmate Rory Clegg also drops out of the starting XV, with the England coaching staff opting to give game time to players scarcely throughout the tournament.

Jonny May of Gloucester, who came off the bench to score a last-ditch try against Australia, comes back in the centre to partner Quins' Tom Casson.

Head coach Mark Mapletoft said: "This is a good chance for the whole squad to end the tour on a high.

"I have never won a final game in the three years that I've been involved with England U20s, so that goes for the management team as well.

"It's a great opportunity for all of us involved to finish the tournament on a positive note.

"We've looked at all the South African games. They've clearly had a change of emphasis from last year and previous years.

"They are very comfortable ball-in-hand, they've got some exciting runners and they combine ambition with some traditional South African forward play, which we will need to combat to ensure we maintain dominance throughout the game."

England U20

15. Tom Homer (London Irish) 14. Christian Wade (London Wasps) 13. Jonny May (Gloucester) 12. Tom Casson (Harlequins) 11. Marcus Watson (London Irish) 10. Freddie Burns (Gloucester) 9. Sam Harrison (Leicester Tigers) 1. Joe Marler (Harlequins) 2. Jamie George (Saracens) 3. Mako Vunipola (Bristol) 4. Calum Green (Leicester Tigers) 5. George Kruis (Saracens) 6. Will Welch (Newcastle Falcons) 7. Jacob Rowan (Leeds Carnegie, captain) 8. Jamie Gibson (London Irish)

Replacements

16. Rob Buchanan (Harlequins) 17. Shaun Knight (Gloucester) 18. Charlie Matthews (Harlequins) 19. Alex Gray (Newcastle Falcons) 20. Charlie Davies (Stade Francais) 21. Rory Clegg (Harlequins) 22. Sam Smith (Harlequins)