England's Joe Roots (L) signals the Decision Review System (DRS) as Australia's Mitchell Johnson (C) and Steven Smith celebrates his dismissal during the fourth day of the third Ashes test cricket ... more 
England's Joe Roots (L) signals the Decision Review System (DRS) as Australia's Mitchell Johnson (C) and Steven Smith celebrates his dismissal during the fourth day of the third Ashes test cricket match at the WACA ground in Perth December 16, 2013. A replay of the Decision Review System (DRS) proved him as he was out. REUTERS/David Gray (AUSTRALIA - Tags: SPORT CRICKET) less 
1 / 31
Reuters | Photo By DAVID GRAY / REUTERS
Mon, Dec 16, 2013 2:23 AM EST