Angus Neilson and Alex Wallace have both been ruled out of Chinnor’s National 3 clash at home to Richmond tomorrow with concussion.
Flanker Neilson and utility back Wallace sustained blows to the head in last week’s defeat at Worthing, so must sit out for a mandatory two-week period.
Max Williams and Tom Shiel come into the squad as Chinnor bid to stay clear of the relegation zone.
Fly half James Cathcart is set to play for Chinnor 2nd as he continues his recovery from a dislocated shoulder.
Henley Hawks hope to welcome back lock Steve Green and centre Angelo Flammia for their home game with high-flying Rosslyn Park.
Wing Sam Portland is in contention after a decent league debut as a replacement last week.
Flanker Stean Williams is doubtful with injury, so Alex Dupee is poised to fill in.
Experienced No 8 Anthony Jackson will captain Oxford Harlequins when they host Exmouth in South West 1 tomorrow.
The Oxford Blue leads the side as regular skipper Simon Chadbone drops to the bench with Will Johnson coming in at loose-head prop.
Ed Davies comes in at lock for Adam Pearson (unavailable), while Tim Lawson is preferred to Nick Sevier on the left wing.
Zane Du Randt provides back row cover on the bench.
The match has been rescheduled from January 10, but with cold weather again expected, a pitch inspection will take place this afternoon.
Wallingford will be without captain Kris Blaszko for Sunday’s Oxfordshire Cup first-round tie at home to Witney (2).
Prop Blaszko has an elbow injury, while centre Henry Pooler (shoulder) and lock Paul Lewis (unavailable) also miss out.
Coach Chris Norrington said: “I am expecting a tough game because they are showing a bit of form.
“We have a slight problem in that we are all going on tour on the day of the final, but we’ll have to cross that bridge when we come to it!”
Hooker Brad Groeblar and flanker Joe Rowles are added to Witney’s squad.
Chinnor (v Richmond, home): from Mahony, Shiel, R Williams, Powell, Oxley, Serrano, Hewitt, Prescott, Stock, Winpenny, Ellis, Whelan, Hutchings (capt), Payne, Hastings, Jackman, Wright, Eckert, M Williams, Shiel, Rowley.
Henley Hawks (v Rosslyn Park, home): from Haynes, Birtwhistle, Baggett, Flammia, Wells, Portland, Davies, Hobart, Fulton, Gaunt, Fuller, Millford-Scott, Tattersall, Hoosen-Owen, Penny, Clements, Nixon, Green, Payne (capt), Williams, Dupee, Hennings.
Oxford Harlequins (v Exmouth, home): H Jones, Campbell, Lombard, Spottiswoode, Lawson, Forth, Cope, Johnson, Needham, Ferreira, Gray, Davies, Nicholl, Young, Jackson (capt). Reps: Chadbone, Sevier, Du Randt.
Wallingford (v Witney, home): Venners, Smith, Brettell, Collett, Windsor, Sayce, Viljoen, Keable, Hill, Small, M Turner, D Jenkins, Chapman, Holton, Jeffrey.
Witney (v Wallingford, away): Strutt, Gouldie, L Collins, Monks, J Lamb, Tustin, H Lamb, G Campbell, Brocklebank, Serle, D Godfrey, Groeblar, Richens, Fowler, C Bennett, Muller, C Campbell, Rowles, J Hicks (capt).
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