Rassie Erasmus explains wildcard pick Quan Horn at flyhalf for Springboks
Springbok coach Rassie Erasmus surprised all when he named Quan Horn at flyhalf for the Barbarians clash on Saturday.

The 89-cap All Black is one of 19 internationals from 11different nations coming together for the Nelson Mandela Bay Stadium clash against the world champions.
Having represented the famous invitational club against Fiji in 2013, Perenara partners Toulon and Argentina ace Tomas Albornoz at half-back.
Munster's Alex Nankivell partners France international Virimi Vakatawa. Scotland and British and Irish Lions wing Duhan van der Merwe reunites with former schoolmate Gelant, who faces his countrymen, while Wallabies wing Andrew Kellaway completes the back three.
There is plenty of size, power and experience in the pack with Gloucester's Argentinian Mayco Vivas, Dragons RFC and Wales hooker Elliot Dee and Edinburgh and Scotland tight-head D'Arcy Rae forming the front-row.
Western Force and Los Pumas lock Franco Molina partners Bayonne's Alex Moon in a towering second-row.
Harlequins and Argentina stalwart Guido Petti and Panasonic Wild Knights' Lachlan Boshier are named on the flanks with Samoa sensation Miracle Fai'ilagi pulling on the number eight jersey.
There is a strong South American flavour to the replacements bench with Los Pumas Lionel Oviedo and Pedro Delgado named alongside Uruguay's Santiago Arata.
"We are all really excited for Saturday afternoon, to play against the world champions in South Africa is an awesome opportunity," said Barbarian F.C head coach Scott Robertson.
"We have embraced the Barbarians' spirit and tradition this week, coming together as a group and enjoying each other's company in Cape Town.
"It's a team packed with talent, guys who have come from all over the world and have a great chance to showcase their ability in Port Elizabeth.
"We want to express ourselves and do the famous black and white jersey proud."
Barbarian F.C - 15 Warrick Gelant, 14 Andrew Kellaway, 13 Virimi Vakatawa, 12 Alex Nankivell, 11 Duhan van der Merwe, 10 Tomás Albornoz, 9 TJ Perenara (captain), 8 Miracle Fai'ilagi, 7 Lachlan Boshier, 6 Alex Moon, 5 Franco Molina, 4 D'Arcy Rae, 2 Elliot Dee, 1 Mayko Vivas
Replacements: 16 Leonel Oviedo, 17 Oli Kebble, 18 Pedro Delgado, 19 Izack Rodda, 20 Liam McConnell, 21 Santiago Arata, 22 Harry Plummer, 23 Tuidraki Samusamuvodre