Six of the best nine clubs in the world have been drawn against each other in the Round of 16 stage of the Champions League, according to ESPN's Soccer Power Index.

Tottenham Hotspur vs. Juventus, Chelsea vs. Barcelona and Real Madrid vs. Paris Saint-Germain are three matchups we typically see in the quarterfinals or semifinals.

SPI ranks Barcelona as the best team in the world while Chelsea ranks ninth.

Before Real Madrid and PSG drew each other, the two teams combined for a 30 percent chance of winning the Champions League.