Chelsea have certainly had the final say in their unexpected social media rivalry with Flamengo. When two sides met on the pitch last month, it was the Brazilian outfit who emerged victorious in the Club World Cup Group D clash after coming from behind.

Back in the group stage of the competition, Brazilian side Flamengo stunningly defeated Chelsea 3-1. Flamengo's social media account proceeded to troll Chelsea multiple times, including one post with the score graphic and the caption "Easy win against London Blue!"

SportsLine's Martin Green reveals his picks for the FIFA Club World Cup Final matchup between Paris Saint-Germain and Chelsea at MetLife Stadium in East Rutherford, N.J., on Sunday