Warrington edged Wigan by two points to earn a Challenge Cup quarter-final clash at Hull KR.
A goal by Stefan Ratchford, above, was the difference as both sides crossed four times at the Halliwell Jones Stadium, where the home side won 26-24.
St Helens will host Wakefield after a 22-16 win at Huddersfield.
The other two quarter-final ties are Hull against holders Catalans and, in an all-Championship clash, Bradford versus Halifax.
Results
Challenge Cup sixth round: Huddersfield 16 St Helens 22, Warrington 26 Wigan 24.
Championship: Rochdale 18 York 24.
NRL: Sydney Roosters 30 Canberra 24, South Sydney Rabbitohs 32 North Queensland 16.
Full reports and pictures in Monday’s League Express.
