Harris (chest/ribs) was present for practice Wednesday, Mike Reiss of ESPN.com reports.
The extent of Harris' participation won't be known until later Wednesday, but his presence on the field to begin the week is a positive sign after the running back was forced out Sunday's win over the Texans, first by a chest issue and then by a rib injury. That said, if Harris ends up sitting out this weekend's game against the Cowboys, Rhamondre Stevenson and Brandon Bolden would be next up for touches in New England's backfield.