Bradford and Bingley have to shuffle their backs tomorrow at home to Darlington Mowden Park in National League Three.

Both the Wagon Lane club's first-choice centres are unavailable for a match they must win to keep the pressure on second-placed Macclesfield.

Stuart Dixon's dodgy hamstring didn't last the course at Fylde last weekend and Phil Greaves has been banned for the rest of the season after failing a drugs test for the stimulant ephedrine.

Geoff Wappett's answer to this conundrum is to pull Richard Tafa infield and partner him with Joe Simpson. Marcus Dracup comes off the bench to start on the flank and the versatile Rob Padgett is promoted from the second team to the bench.

Wappett said: "We played really well last Saturday but Mowden Park are fighting for their lives. However, not only do we need to win, we also need to get that bonus point for four tries."

While Greaves' suspension has made it a tough week for the Bees, it has been a happier one at Cleckheaton, where Dave Harrison has been named National Clubs' Association coach of the month for February.

Cleck have another 'must-win' game - this time at home to Kendal - as they bid to stay clear of relegation.

The hosts welcome back John Bentley and Mark Doherty on the wings, Doherty having come on as a replacement last Saturday at New Brighton after being delayed by work commitments.

James Marshall drops to the bench to make way for Bentley, while Dave Chester is in the second team. The only change in the pack is Richard Wilson for Oliver Hawkins in the second row.

Unchanged Otley face leaders Exeter Chiefs for the second week in succession in National League One. Otley lost last week 41-15, but their three league victories over Exeter have all come at Cross Green.

Bradford Salem, sitting pretty in second place in Yorkshire Division Two, must be careful that complacency doesn't trip them up at home to Heath, who are by no means safe from relegation.

Hooker Simon Markey is expected to be out for three weeks with medial knee ligament problems, so Craig Buxton moves over to the middle of the front row, giving Dave Luxton his first start of the season at prop. Neil Klenk is cover on the bench in case centre Damien Cope hasn't recovered from a groin problem. Matthew Fitch makes his debut on the bench.

Baildon, still hunting a promotion spot in Yorkshire Three, rest player-coach Hugh Gumbs (broken hand), and give Chris Fife a start at centre at home to Bramley Phoenix Park.

Keighley have former Bees centre Tim Marlow on the bench for their Yorkshire One match at home to Selby.

Richard Cavender moves from fly half to full back for Matthew Cox (unavailable), and Morgan Bailey starts in the back row, Michael Feather is at No 8 for the benched Peter Schofield (ankle injury) and Lee Sugden switches to the second row.