Premier League leaders Chelsea host Manchester City on Wednesday night in a huge game for Pep Guardiola's side.
Chelsea are seven points clear at the top, while City need a result at Stamford Bridge to keep pressure on the other teams in the race for the top four.
Here, Press Association Sport looks at the fixture in numbers.
4 - Red cards in the last five league fixtures between the two clubs - including the fixture at the Etihad Stadium earlier this season, when Fernandinho and Sergio Aguero were both shown red in stoppage time.
16 - Goals in the last four meetings in all competitions, with both teams winning two games each.
2013-14 - The last time Chelsea did the league double over City.
7 - Sergio Aguero has scored seven goals against Chelsea, with six of those coming in his last seven appearances against the London side - including his hat-trick last season at Stamford Bridge. He is one goal away from matching the haul of Frank Lampard, who scored seven in the fixture for Chelsea before netting an 85th-minute equaliser against his former club in 2014 for City.
6 - Even after losing to Crystal Palace, Chelsea have only dropped six points at Stamford Bridge all season, their other defeat coming back in September when they lost 2-1 to Liverpool.
10 - The number of goals Chelsea have conceded at Stamford Bridge in the league so far this season. City, though, have scored 10 goals in their last four away league games.
2014-15 - The last time there was a draw in the fixture. Both games that season ended in 1-1 draws, two of only seven in the 39 Premier League meetings between the clubs.
116 - Goals scored between the two teams in the Premier League so far this season. Chelsea just edge it with 60 goals, compared to City's 56.