Everton and Tottenham blew an opportunity to go second in the Premier League by playing out a lackluster 0-0 draw on Sunday, while Cardiff beat fierce rival Swansea 1-0 in the English top flight's first-ever Welsh derby.
Arsenal kept its five-point lead after 10 games following a stalemate at Goodison Park, which raised doubts about the top-four credentials of both Everton and Tottenham.
The day's other game -- played amid a heavy police presence in south Wales -- was also heading for a goalless draw when Steven Caulker met Craig Bellamy's corner with a downward header in the 62nd minute, lifting Cardiff above Swansea in the bottom half of the standings.
Swansea was reduced to 10 men in second-half stoppage time when goalkeeper Michel Vorm was given a red card for a professional foul on Fraizer Campbell. With the visitors having used all their substitutes, right back Angel Rangel donned the gloves for the final minutes and was forced into action from the resulting free kick, tipping over Peter Whittingham's effort.