Thats an incredible statistic.Alvarez is one of only 3 to win a world cup and league title in the same season. Messi and Otamendi being the other two.
I genuinely though loads of players would have won a world cup and league title in the same season.
Liverpool won the league in 66 and Roger Hunt played for England and Pele springs to mind also.
I thought several Italian and Germans would have completed both when their national team won World Cups.
Is this a trick question as the recent World Cup took place mid-season?