World Cup Picks: United States vs. Belgium, Argentina vs. Switzerland

Neither Argentina nor Switzerland have played to their full potential in the World Cup so far, with both sides hoping for an improvement in the knockout stages.

Argentina will be facing a Switzerland side that should not be underestimated, especially since Lionel Messi and company have only won their group games by a single goal each. The Swiss were dominated against France 

Argentina v Switzerland betting preview for 2014-07-01 | World Cup match tips and odds.

But with Argentina beginning the knockout phase with a Round of 16 meeting with Switzerland on Tuesday, he could now do with a little more support. Argentina's opening 2-1 win against Bosnia-Herzegovina got better following a half-time switch back to a 

Switzerland entered the World Cup with questions about their form, none of which has been answered as they face Argentina in the round of 16. Which Swiss squad will show up? The one that only conceded one goal to Ecuador and Honduras in group play