Premier League leaders Arsenal showed typical resilience in beating Tottenham Hotspur 2-1 at Highbury on Saturday to preserve their unbeaten record this season and go four points clear at the top.Freddie Ljungberg’s deflected winner in the 78th minute settled a tight derby after Robert Pires had cancelled out Darren Anderton’s early strike for Spurs.But bottom club Leeds United’s problems intensified after they crashed 6-1 at Portsmouth. Charlton Athletic went fourth in the table after a 3-1 home victory over Fulham.Arsenal have 30 points, four more than Chelsea and five more than champions Manchester United, both of whom play on Sunday. Charlton have 21 points.The kick-off at Fratton Park was delayed for half an hour by a power failure but it merely put off the inevitable as Peter Reid’s Leeds team lost their seventh game in eight league matches.Leeds, wallowing in crippling debts off the pitch, competed in the first half but fell apart in the second, conceding four goals.Gary O’Neil scored twice for Portsmouth, who remain in mid-table after their best win of the season. Leeds stay bottom on eight points, the same tally as Blackburn Rovers and Leicester who did not play on Saturday.(Reuters)