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Holders Warrington Wolves face a trip to Championship side Keighley Cougars in the Challenge Cup fourth round.

The Wolves have lifted the trophy at Wembley in three of the last four seasons, beating Leeds 35-18 in last year's final.

Leeds Rhinos face Castleford Tigers and Hull KR host St Helens in the only all-Super League ties of the round.

Featherstone, who shocked the Tigers in last season's fourth round, travel to London Broncos.

Fellow Championship sides Hunslet and Batley face Super League opposition in Catalans and Huddersfield respectively.

The draw has also thrown up a Cumbrian derby, with Whitehaven hosting former winners Workington Town.

All 16 fourth-round ties will be played during the weekend of 20-21 April.

Wigan Warriors v Leigh Centurions

Hemel Stags v Wakefield Trinity Wildcats

Hunslet Hawks v Catalan Dragons

Rochdale Hornets v Bradford

Batley Bulldogs v Huddersfield Giants

Hull FC v North Wales Crusaders

Sheffield Eagles v Dewsbury Rams

London Broncos v Featherstone Rovers

Halifax v Barrow Raiders

Widnes Vikings v Doncaster

Keighley Cougars v Warrington Wolves

Leeds Rhinos v Castleford Tigers

University of Gloucester v Salford City Reds

York City Knights v Toulouse

Whitehaven v Workington

Hull KR v St Helens