Nottingham - England batsman Jonathan Trott's ongoing participation in the second Test against India was in doubt after he suffered a shoulder injury while fielding at Trent Bridge here on Saturday.
An England statement said he would not field again on Saturday's second day.
Trott, also an occasional medium-pacer, fell after lunch when diving at mid-off in an attempt to stop Rahul Dravid scoring a run as India replied to England's first innings 221.
The 30-year-old South Africa-born Trott, visibly in pain, needed several minutes' on-field treatment before he walked off the field unassisted.
An England statement said: "Jonathan Trott to undergo a scan later today (Saturday)/this evening on left shoulder to determine his participation in the rest of the Test. He won't field again today."
If number three Trott, prolific since making a hundred on Test debut against Australia at The Oval in 2009, was ruled out of the rest of the match it would leave England a batsman down in their second innings as substitutes cannot bat or bowl but only field.
England lead this four-match series 1-0 after a 196-run first Test victory at Lord's.
The third Test starts at Edgbaston, Trott's Warwickshire home ground in Birmingham, central England, on August 10.