Messi was heckled nonstop by large groups of Club América fans among the crowd of 46,000 at Allegiant Stadium on Saturday night, and there were reports that some of the derogatory chants were of the vulgar and homophobic variety that have led to sanctions against Mexican clubs and the Mexican federation in recent years.

Lionel Messi has seen his “professionalism” called into question by a former rival after aiming a World Cup taunt at Mexican supporters.