FIFA President Gianni Infantino has defended the use of video replays despite a shaky debut for the new system at the Club World Cup. According to AP, the replay system allows referees to halt play to review footage of "game-changing decisions", but its introduction has had a mixed reaction from players and coaches at the tournament, including Real Madrid star Cristiano Ronaldo. "The results are extremely positive," Infantino said. "Of course there are learnings, of course there are a few topics that we have to look into and discuss in more detail, but the result is extremely positive. Why? Because the referee has been able to take the right decision and justice and transparency have been brought to the game." Following Thursday's match between Real Madrid and Club America, several players were skeptical about the system. The system was used for the first time on Wednesday when Kashima Antlers were awarded a penalty kick that led to the first goal in a 3-0 win over Atletico Nacional.