JOHANNESBURG, SOUTH AFRICA - JANUARY 15: Joe Root of England celebrates his century during day two of the 3rd Test at Wanderers Stadium on January 15, 2016 in Johannesburg, South Africa. (Photo by Julian Finney/Getty Images)
JOHANNESBURG, SOUTH AFRICA - JANUARY 15: Joe Root of England celebrates his century during day two of the 3rd Test at Wanderers Stadium on January 15, 2016 in Johannesburg, South Africa. (Photo by Julian Finney/Getty Images)