Richie McCaw : 'We had to dig deep'

New Zealand Captain Richie McCaw reflects on a hard fought win over South Africa which takes the All Blacks to a second success Rugby World Cup final. Follow World Rugby on social media:Official Website! http://www.rugbyworldcup.com,SUBSCRIBE to our YouTube Channel For More Great Videos    / irb,follow   us on Twitter:   / rugbyworldcup,like   us on Facebook:   / rugbyworldcup   and   / worldrugby,follow   us on Instagram:   / worldrugby  ,