Theo Walcott has given England an injury scare ahead of Tuesday's crunch final Group D game against Ukraine in Donetsk.
The Arsenal winger left training early at the Hutnik Krakow stadium on Sunday as a precaution with a tight hamstring.
Walcott made an instant impact after coming on as a second-half substitute against Sweden at the Olympic Stadium in Kiev on Friday night, scoring once and setting up Danny Welbeck's winner in a dramatic 3-2 victory.
The 23-year-old's goal against Sweden was his first for England since his superb hat-trick as a teenager against Croatia four years ago.
And Walcott, who became the youngest ever England player six years ago, is now pushing for a start in Roy Hodgson's starting XI ahead of James Milner for their final group game.
The Three Lions need only a point against the co-hosts in Donetsk to be sure of a place in the last eight of Euro 2012.