Barcelona 4-1 Roma: 5 Talking Points 

#1 How long can Barcelona keep it up?

Leo came off the bench to rescue a point for his side in Sevile.

The question on everyone's mind right now, even if they deny it, is whether the Catalans can go through the whole season undefeated.

From everything we've seen so far this season, all signs point to the affirmative.

Their previous encounter against Sevilla, in the league, was a harsh reminder of just how driven this Barcelona side is to do the unthinkable.

Two goals in the last two minutes after Messi came on as a substitute and then dismantling Roma in the first leg itself without really getting out of second gear, is more evidence to suggest that Valverde's might ape the astonishing feat achieved by the invincible Arsenal side back in 2004.

You can be certain that a team is going places when winning a treble might not be the most impressive thing they do this season.

We're not willing to bet against Leo and co. rewriting history, are you?