6 Players to Watch on Day 20 of the 2014 World Cup

Day 20 of this exhilarating 2014 FIFA World Cup sees the final two last-16 clashes take place, as Argentina take on Switzerland, before the U.S. then go head-to-head with Belgium later on Tuesday night.

And these are the six players to keep an eye out for in both Sao Paulo and Salvador, as the quarter-final line-up is completed…