Marcelo knows it would be a mistake to look too far ahead.
"We have to go game by game. We can't think about Barcelona. When the week of the Clasico arrives, I'll look at Barcelona, but not until then," said the Brazilian, who hopes his in-form side can become the first team in La Liga to score three or more goals in 10 successive games when they defeated Atletico 3-2 last weekend.
"We have to think about Racing because life could become complicated if we think about another game."