Forward Sean Rigg is named among the substitutes for Oxford United as they take on Chesterfield in League Two.

Rigg has fought back from a hamstring injury but the U's will be without duo James Constable and Jake Wright at the Kassam Stadium.

Former Reading and Stoke City striker Dave Kitson leads the line for United as they look to eat into Chesterfield's four-point lead at the top of the table.

The Spirites are without defenders Nathan Smith and Matty Brown due to injury, while Gary McSheffrey in named on the bench for the visitors.

Eoin Doyle and Ritchie Humphreys are included in the starting XI as Chesterfield look to continue their strong start to the season.

Oxford United: Clarke, Hunt, Raynes, Mullins, Newey, Potter, Whing, Rose, Hall, Smalley, Kitson

Chesterfield: Lee, Talbot, Hird, Cooper, Humphreys, Ryan, Morsy, Roberts, O'Shea, Darikwa, Doyle