Enrique Vera's 27th minute goal has carried Paraguay into halftime with a 1-0 lead, controlling the first 45 minutes against Slovakia.
Vera scored in the middle of the half with an assist from Lucas Barrios, finishing with the outside of his right foot from 17 yards out.
Around the goal, Paraguay controlled the first half, using a formation featuring three strikers to pressure the increasingly suspect Slovakia back line. Slovakia has had much of their possession in their own half, unable to link-up with the midfield, where they should have an advantage over their opponents.
Instead, the Paraguayans have been able to force the Slovak defenders into a number of giveaways, almost leading to a second goal late in the half from Vera.