The Press Association reports: "...reports from the Nursery End nets of an altercation between England batsman Jonathan Trott and Pakistan seamer Wahab Riaz, which was brought to the attention of match referee Jeff Crowe. Riaz remains, officially, available for selection but has not been picked by Pakistan since he became the fourth of his country's players to be interviewed by police in the course of their inquiries into last month's initial allegations of spot-fixing in the Lord's Test."