Barcelona have handed Raphinha the armband and shoved him into the middle of the attack, and suddenly a winger is playing like a No. 9 who was born there. It has worked. He is leading the line, not just decorating it, and the goals have followed him into a position he did not grow up in.
That is the tension sitting under this Rayo Vallecano trip. A converted forward carrying a captaincy and a scoring streak is exactly the kind of setup that either turns into a header for weeks or quietly runs out of gas the first time a defense figures out the trick. Rayo will not simply let Barcelona repeat what has been working. Every away side in this league studies the guy wearing the armband first.
None of that decides whether this game clears 3.5 goals. It just means Raphinha at center forward is the reason people are watching for it. Over or under, the number rides on whether Barcelona's improvised nine keeps finding the net against a team built to make him look ordinary.