Football players and fans alike are prone to superstition. Lucky socks, pre-game rituals and unlucky stadiums; could Round 13 bring a little unpredictablity into the equation?

With Real Madrid stumbling, Sevilla and Valencia will be eager to capitalise and quickly. A win is crucial for each team to stay in the leader's race. Even the statistics suggest this one is to close to call!

With only three games left in the Brasileirao, second place Gremio need to win at all costs in the hopes that first place Sao Paulo encounter some last-minute bad nerves. Could Vitoria be the team to stop Gremio? The statistics suggest not, but underdog Predictors will earn over 80 points for a Vitoria win or draw.

In the Premiership's drop zone this week, Tottenham Hotspur are at home to Blackburn. Everyone's money seems to be on the home side, but Blackburn will be eager to climb over Spurs on their way out of the relegation zone. Pin your prediction on Blackburn to win or draw and you could claim close to 100 points.

In Argentina, Estudiantes de La Plata are at home to second placed Tigre. Los Pincharratas are unbeaten at home in six games but Tigre's overall form suggests a potential upset. Tigre's backers will claim almost 80 points..

Game Of the Week
In Italy, first placed Internazionale host Juventus. Inter are unbeaten at home in five games while Juventus are on a seven game hot streak. Only three points separate the two teams.

Predictor statistics marginally favour a Juventus away win, but fate may have other plans. Getting this prediction right could mean the difference between a FIFA World Cup™ Winner's jersey and a "better luck next time" from your mates.

Predictors get picking! Round 13 deadline is 00:00 GMT, 22 November.

For a list of this week's games click on the 'Where have all the jokers gone?' link on the right.