As a fan, having to watch Sergi Roberto run up and down the flank on a weekly basis can be incredibly exhausting. By the time the clock has reached the 60-minute-mark, the Catalan is usually overclocking himself and one can noticeably see him gasping for air every time he makes an overlap.
A full-back is defined by his athletic ability, which helps him to hold his own when the opposition counters. Dani Alves and Jordi Alba have been instrumental to Barcelona’s tactics in recent history and the latter continues to be a crucial part of the puzzle for the Blaugrana.