Holders take on Staffs at Falkland
The Oratory school paceman, who made a sensational county debut two weeks ago, is still nursing a side strain he suffered during the win over Wales Minor Counties when he took the first four wickets of the match.
His replacement is expected to be left-arm spinner Gurveer Singh, who has joined Henley from Farnham Royal this season.
Carl Crowe and Chris Peploe, who each took two wickets in the 16-run win over Wales, have other commitments this weekend, and are replaced by Harefield batsman Simon Macey and Reading paceman Jack Beaven.
Macey played once for the county last season, while Beaven will be making his first appearance.
Berkshire will be hoping for better weather this Sunday as last weekend's match with Bucks at Buckingham Town was cancelled due to the rain.
The Trophy holders, however, are top of Group Four with three points.
Their final group game is the following Sunday when they travel to Bournemouth to play Dorset.
The probable Berkshire team is: Roberts, Barnes, Macey, Morris, Mordt (capt), Brock, Udal, Davison (wktkpr), Beaven, Slatcher, Singh. 12th man: Ellison.
Play starts at 11am.