Soccer-Sunderland crush toothless Palace

* Sunderland crushed Crystal Palace 4-0 to boost survival hopes

* Kone header put Sunderland ahead in 10th minute

* Ndong doubled the lead in the 43rd minute

* Defoe added quickfire double before halftime

* Allardyce has won just once in seven games as Palace manager

* Crystal Palace visit Stoke next, Sunderland host Southampton

CRYSTAL PALACE 0 SUNDERLAND 4

Feb 4 ( Reuters) - Sunderland produced a remarkable display to crush fellow Premier League strugglers Crystal Palace 4-0 at Selhurst Park on Saturday.

Sunderland, with just once away league win all season, opened the scoring in the ninth minute through defender Lamine Kone before Didier Ndong added the first of three goals in five frantic minutes.

Jermain Defoe ended the contest before the break with a smart quickfire double - his 13th and 14th league goals of the season - as Sunderland ran riot against a team managed by their former boss Sam Allardyce.

Sunderland remained bottom of the table but climbed level on points with 19th-placed Palace who have won just once in 10 league games. (Reporting by Tom Hayward, editing by Ed Osmond)