Preliminary checks have revealed 'no obvious fracture' to Everton striker Andrew Johnson's left ankle, according to the club.
Club physiotherapist Mick Rathbone said: 'Andy was taken off after injuring his left ankle.
'He was taken to the casualty department at Wigan Infirmary where a series of X-rays were done.
'There is no obvious fracture but we will be undertaking a few more specific investigations tomorrow.'
More details are expected to be released tomorrow evening after a full diagnosis is reached.