"We don't need referees to win the game, we just want them to be fair".
Brazil will next lock horns with Serbia at Spartak Stadium in Moscow on June 27.
With Marquinhos in the side, it is easier for Brazil to defend higher and thus stay compact. Sure, he is the most marked player, and unlike Messi's case with Argentina, the ball actually reaches Neymar and he gets to dribble his way to the goal. Tellingly, he didn't go on as a straight swap for fellow striker Gabriel Jesus but instead for central midfielder Paulinho.
The competition's most decorated nation were in danger of failing to win either of their first two games in Russian Federation before Coutinho prodded in a stoppage-time opener and Neymar added a second in a 2-0 success.
The spearhead of Brazil's attack came through the game unscathed and will be delighted to have opened his account.
Brazil's coach Tite also commented on his players tears, suggesting they could be down to the huge pressure of leading the five-times world champions.
Aleksandar Mitrovic gave Serbia the ideal start after five minutes, but the Swiss gradually worked their work back into the game in rainy Kaliningrad.
With their first win of the tournament, Brazil now have four points from two matches they have played, and are nearly certain to qualify into the next round.
Serbia play Switzerland later on Friday.
Barcelona's Coutinho, who scored with a brilliant strike in the opening game, failed to find his range and Chelsea's Willian, taken off at half-time, was bad on the right.
With Brazil increasingly trying their luck from outside the box as Costa Rica defended with discipline, Willian shot over and Navas saved Marcelo's low strike.
He did benefit, though, from having another forward up close to him.
No nation is more synonymous with the World Cup and its defining stars than Brazil.
"When I gave the ball back (to Costa Rica) he insulted me", Silva said in comments reported by globo.com.
And his players clearly respect him, with Coutinho and captain Thiago Silva speaking of how the team is learning to keep going right to the final whistle.
Brazil's late World Cup win over Costa Rica takes them to the top of the Group E but they have failed to convince in their two matches so far and the focus is once again shifting to the South American side's old foe â emotional stability. But if Argentina claims all three points, it can still advance depending on the result of the other match between Croatia and Iceland.
As usual, he made the game all about him.
The referee initially granted a penalty to Brazil. The penalty was awarded after a video review showed that Alfred Finnbogason had been brought down by Tyronne Ebuehi.