Just one Cope America fixture on Thursday saw Costa Rica record a comfortable over a Bolivian side who ended up with nine men.
It took the Ticos almost an hour to break down La Verde but once the first goal came, it seemed as though they would cruise to victory.
Josue Martinez opened the scoring in the 58th minute when he knocked the ball home under extreme duress after Allen Zuniga's initial shot was blocked by Bolivia keeper Carlos Arias.
It should have been 2-0 when Zuniga stepped up to the penalty spot following Ronald Rivero's handball in front of the goal-line but Arias made a great save diving to his right before keeping out the follow-up.
With Bolivia reduced to ten men, Costa Rica went further on the attack and things got even easier when Walter Flores was given his marching orders for a challenge on Joel Campbell.
The Ticos managed to grab a second when the impressive Campbell received a neat through-ball to the left, took a touch which allowed him to advance into the area and prodded home to give his side all three points.
The win enabled Costa Rica to move above hosts Argentina into second on the Group A table behind Colombia as Bolivia remained at the bottom with just one point.
The next lot of Copa America is scheduled for tonight with a Group C double-header from Mendoza involving Uruguay versus Chile and Peru versus Mexico.
2011 Copa America - Argentina
Group A
Friday July 1Argentina: 1 (Sergio Aguero 75') Bolivia: 1 (Edvaldo Rojas 48') Estadio Ciudad de La Plata, La Plata
Saturday July 2Colombia: 1 (Adrian Ramos 45') Costa Rica: 0 (red card: Randall Brenes 27') Estadio 23 de Agosto, Jujuy
Wednesday July 6Argentina: 0 Colombia: 0 Estadio Brigadier General Estanislao Lopez, Santa Fe
Thursday June 7Bolivia: 0 (red cards: Ronald Rivero 70', Walter Flores 75') Costa Rica: 2 (Jose Martinez 58', Joel Campbell 78') Estadio 23 de Agosto, Jujuy
Group B
Brazil: 0 Venezuela: 0 Estadio Ciudad de La Plata, La Plata
Paraguay: 0 Ecuador: 0 Estadio Brigadier General Estanislao Lopez, Santa Fe
Group C
Uruguay: 1 (Luis Suarez 45') Peru: 1 (Paolo Guerrero 23') Estadio del Bicentenario, San Juan
Chile: 2 (Esteban Paredes 66', Arturo Vidal 72') Mexico: 1 (Nestor Araujo 40') Estadio del Bicentenario, San Juan
