The two sides are locked in a fight for the Premier League title, but on Saturday Tottenham Hotspur and Chelsea will battle on a second front when they meet at Wembley in the FA Cup semi-finals.
Though Spurs have closed the gap on their London rivals in the league, the club's recent record in football's oldest competition is pretty dismal.
Tottenham have lost their last five FA Cup semi-finals and sit joint-second in the all-time list for most games lost at this stage.
They have also endured a miserable recent time at Wembley itself. In their last eight matches at the national stadium, Spurs have won only once and were elimanted from the group stage of this season's UEFA Champions League at the iconic venue.
In the weekend's second semi-final on Sunday, Arsenal take on Manchester City, who have won their last eight games at this stage of the FA Cup.
City manager Pep Guardiola also holds fond memories of Wembley, having won the Champions League there as a player in 1992 and as a coach in 2011, both with Barcelona.
The Goal Pressure Index uses more than 750,000 data points as well as factors including league position, point in the season and the opposition to calculate a rating out of 100 for every Premier League player every week.