Cardiff City took the spoils in the first ever all-Welsh fixture in the 125-year history of the English top flight after winning 1-0 at home to fierce local rivals Swansea City on Sunday.
Michu threatened twice for the visitors in the early stages, but Cardiff ultimately prevailed thanks to a 62nd-minute header from former Swansea centre-back Steven Caulker on a rain-lashed day in the Welsh capital.
The English international's goal from a Craig Bellamy corner gave Cardiff only their second win in eight league games and had the added bonus of elevating them above Swansea to 12th place in the table.
Swansea, who had goalkeeper Michel Vorm sent off in injury time for a last-man foul on substitute Fraizer Campbell, slip to 13th.
Tottenham Hotspur and Everton prevented each other from climbing to second place in the English Premier League table after an open-ended 0-0 draw at Goodison Park.
Tottenham had the better of the first half, with Everton creating more clear-cut chances in the second, while each team had a penalty claim rejected either side of half-time.
The point was enough to take Tottenham into the top four, level on points with Chelsea and Liverpool and five points below leaders Arsenal, while Everton remain in seventh place, albeit only a point behind Spurs.
Everton goalkeeper Tim Howard had to save from Sandro, Kyle Walker and Lewis Holtby, while marauding Spurs left-back Jan Vertonghen appealed for a penalty but was turned down after being clipped by Seamus Coleman.
The home side began to enjoy more success in the second period, however, with Vlad Chiriches producing a superb last-ditch tackle to thwart Kevin Mirallas and substitute Ross Barkley shooting narrowly over.
In a reversal of the first-half penalty incident, Coleman was then brought to his knees by Vertonghen as he shaped to shoot inside the Spurs box, but again referee Kevin Friend remained unmoved.