Wakefield Wildcats 20 (Tadulala, Halpenny, Catic tries; Rooney 4 goals) def. Bradford Bulls 12 (Withers 2 tries; Deacon 2 goals). Att: 9,451.
Michael Withers put the Bulls ahead but tries from Semi Tadulala, Colum Halpenny and Ned Catic and with eight points from Jamie Rooney, the visitors took a 20-6 lead.
Bradford cut the gap to just eight points with Withers adding his second. However, the brave Wildcats defence saw the visitors hold out and move within a point of safety.
Wakefield now look forward to hosting Castleford Tigers next week in a winner takes all match.
The Tigers looked to be in control as they took a 14-4 lead with tries from Luke Dyer and Danny Sculthorpe and three goals from Danny Brough. However, Daley Williams hit back before half-time and scores from Luke Robinson, Andy Coley and David Hodgson after the break sealed victory for the Reds.
Castleford must now avoid defeat next week at Wakefield to avoid the drop.
Huddersfield Giants 20 (Donlan, Paul, Aspinwall, Nero tries; De Vere 2 goals) def. Catalans Dragons 12 (Murphy, Rinaldi tries; Frayssinous 2 goals). Att: 6,463.
Huddersfield guaranteed their engage Super League survival with a victory in the South of France over Catalans Dragons.
Robbie Paul touched down to give the Giants an early lead before Justin Murphy replied for the hosts. However, Chris Nero and Stuart Donlan then put Huddersfield on course for victory with further tries.
Julien Rinaldi crossed to give the hosts late hope, but Martin Aspinwall secured the Giants' win to keep them in Super League.
The game was over as a contest by half time as the hosts lead 30-0, inspired by the brilliant Jamie Lyon, who claimed a hat-trick in the opening 26 minutes. In the second half Saints scored four more tries. Leeds did manage three consolations from Clinton Toopi and a brace for Scott Donald.
Harlequins R.L. 31 (Hopkins 2, Haumono 2, Dorn tries; Paul 5 goals; McLinden field goal) def. Wigan Warriors 30 (Fletcher 3, O'Loughlin, Dobson tries; Dobson 5 goals). Att: 5,737.
The hosts had a 21-12 lead at the break, thanks to tries from Solomon Haumono, Luke Dorn and Lee Hopkins. Wigan, with Bryan Fletcher scoring a hat-trick, fought back and made Quins hold on in a nervy finale after Michael Dobson brought them within a point.
However, Quins captain Mark McLinden�s drop-goal at the end of the first half proved to be the difference.
Warrington Wolves 26 (Bridge, Briers, Barnett, Westwood tries; Briers 5 goals) def. Hull F.C. 14 (Tony, Raynor tries; Cooke 3 goals). Att: 9,915.
Hull, who came into this game knowing they could not finish any lower than second place, trailed 14-2 at the break thanks to Warrington tries from Richie Barnett and Chris Bridge.
Gareth Raynor scored to cut the gap for the Black and Whites, but Stuart Reardon's superb last-ditch tackling and Ben Westwood's try kept the Wolves in control.
Motu Tony gave the visitors hope, but Lee Briers' interception effort made the game safe for Warrington and confirms their play off place.