Chinnor coach Jason Bowers is asking his players for a fully focused performance when they host Bournemouth in South West 1 tomorrow (2.30).
Title-chasing Chinnor need convincing victories to have the best chance of overhauling Bracknell, so they can't afford to ease up.
Bowers said: "We have started well in the last two league games against Old Patesians and Coney Hill.
"What we now need to do is string together an 80-minute performance.
"Bournemouth have won their last four or five on the bounce, so must be in good from.
"They have either got injured players back or have recovered their confidence from last season "However, we are at home and that's got to be a good thing.
"We just want to keep the winning momentum going."
Centre Darren Oxley returns after flu, but otherwise Chinnor are unchanged.
An RFU spokesman confirmed to the Oxford Mail last month that should Chinnor and Bracknell finish level on points, Chinnor's points difference accrued at home to St Ives will be expunged.
This is because Chinnor beat the Cornishmen 77-0, while Bracknell were given a walkover by the same side.
But Bowers said that Chinnor were still waiting to be officially informed about this by the RFU.
Fly half Frank Jones and full back Huw Jones are back as Oxford Harlequins host Reading.
Back row forward Phil Rowe is away in Ireland, while Neil Spottiswoode and Peter Robinson will both make strong claims to be included on one of the wing positions.
Quins won 27-18 at Reading in September, but their opponents have bolstered their squad with several British Army players this year.
Henley Hawks will be without on-loan wing Mark Odejobi for their crunch National 2 relegation clash at home to Wharfedale.
The Wasps youngster is playing for England in tonight's Under 20 Six Nations match against Scotland.
James Elwood drops to the bench for Witney's visit to in-form Swindon in Southern Counties North.
Flanker Tim Muller has to be content with a place alongside him after missing last week's victory.
Bicester will be without fly half Nick Kenny (wedding) and flanker Dan Spencer (work) when they travel to BB&O Premier Division leaders Chipping Norton.
Chippy will seal the title should they win.
Chinnor (v Bournemouth, home): from Winpenny, Baker, Whelan, Cawston, Hutchings (capt), Black, Hastings, Rixon, Winslade, McGuire, Gustafson, Cathcart, Oxley, Powell, Carter, Williams, O'Mahony, Huxford, B Hewitt.
Oxford Harlequins (v Reading, home, meet 1pm): from Aldous, Needham, DeLange, Chadbone, Eckert, Payne, Gerber, Soper, Jackson, A Cope (capt), F Jones, Noyce, Spottiswoode, Johnson, Wilson, Robinson, Davies, Gardner, H Jones.
Witney (v Swindon, away): Wheater, H Lamb, J Lamb, Strutt, L Collins, J Collins, G Campbell, Dore, A Copperwheat, Serle, Fowler, J Hicks (capt), Worrall, C Campbell, Collis. Reps: Elwood, Muller, Richens.
Bicester (v Chipping Norton, away): A Spencer, Rushworth, Lewis, Nash, Leverton, Ward, Risbridger (capt), W Morris, Davies, S Barnes, Malins, Linstrom, Nightingale, Kimber, Thurlow. Reps: from Shaw, A Morris, Walsh, Rakacikaci.
Oxford Harlequins 2nd (v Maidenhead 2nd, home, meet Southern Bypass, 1pm).
Oxford Harlequins 3rd (v Thatcham, away, meet Southern Bypass, 11.45am).
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