Dawid Malan is a major doubt for England's T20 World Cup semi-final against India on Thursday.
The batter suffered a groin injury while fielding in a victory over Sri Lanka on Saturday that saw England through to the last four.
Malan was unable to bat in that crucial win at the Sydney Cricket Ground and looks likely to miss the showdown with Rohit Sharma's side at the Adelaide Oval.
England all-rounder Moeen Ali told the BBC: "He [Malan] is a big player and has been for a number of years.
"He has been one of our best players. I don't know but it doesn't look great."
Phil Salt could come into the side if the former number one T20I batter in the world is ruled out.
England may also consider bringing in an extra bowler, with Chris Jordan, David Willey and Tymal Mills alternative options.
New Zealand face Pakistan in the first semi-final at the SCG on Wednesday.