#1 Lionel Messi
Barcelona struggled massively in Lionel Messi's absence due to injury earlier in the season and with his performance against Slavia, it is easy to see why.
Within three minutes of the game, the Rosario native had put Barcelona ahead with a characteristically cool finish, while writing his name into the record books as the first player to score in 15 consecutive Champions League seasons.
Although it was far from a vintage display by the 32-year-old, this can be forgiven given that he only recently returned from an injury layoff.
Messi also had a hand in the winning goal, supplying the pin-point cross from a freekick that Luis Suarez turned into the back of the net and he would have had another assist after playing in the Uruguayan one-on-one with the goalkeeper, only for him to shoot wide.
Messi also missed a gilt-edged chance late in the game, but had three shots on target, made four key passes and completed 10 dribbles in what was another five-star performance from the five-time Ballon d'Or winner.