Marcelo admits Lionel Messi is the toughest opponent he's ever faced despite also coming up against Cristiano Ronaldo early in his career.
The former Real Madrid star recently left the Spanish capital after a trophy-laden period that saw him win the Champions League five times. Four of those victories came alongside Ronaldo, whom he formed an immensely close bond with at the Bernabeu.
Marcelo, Ronaldo and co were involved, in the eyes of many, in the greatest El Clasico era of all-time such was the strength of Madrid and Barcelona, who were then led by Pep Guardiola. Lionel Messi was their talisman and was winning Ballon d'Ors at will.
