In a bold move that has sent ripples through South American football, Cerro Porteño attempted to gain an edge by narrowing their pitch by four meters before facing Brazilian giants Palmeiras last Wednesday. But Conmebol wasted no time in shutting down this creative "tactic."

On Thursday, the South American football governing body dropped a bombshell directive: every team competing in the Copa Libertadores and Copa Sudamericana must now officially register their field dimensions with Conmebol. And here's the kicker—those measurements must stay locked in for the entire tournament, no last-minute tweaks allowed.

Teams have until next Monday at 2 PM (Asunción time, matching Brasília) to submit their official dimensions. That means before the next round of group-stage action kicks off, every club will be playing on a field that matches what's in the rulebook.

So what are the standards? For the Libertadores, Conmebol recommends a pitch size of 105 meters by 68 meters, with a minimum of 100x64 and a maximum of 110x75. No more surprises like the one Palmeiras faced at Cerro's Estadio La Olla Azulgrana, where players noticed the narrower field the moment they stepped onto it.

The controversy didn't end there. Palmeiras manager Abel Ferreira didn't hold back in his criticism of the Paraguayan club's field-altering strategy, calling it out as unsporting behavior. With this new ruling, Conmebol is making it clear: when it comes to the playing surface, the rules apply equally to everyone.