Neco Williams is stretchered off during the first half at Cardiff City StadiumGetty Images
Nottingham Forest's Neco Williams looks an injury doubt for Wales' World Cup qualifier against Belgium.
Williams, 24, was substituted 21 minutes into Wales' 3-0 win over Liechtenstein.
The former Liverpool youngster went down in agony after attempting a cross in a one-sided opening at Cardiff City Stadium, leaving the pitch on a stretcher following treatment.
The 47-cap international appeared to be in discomfort as he came off with little time before Wales' fourth game of their campaign to reach the 2026 tournament.
Wales head to Brussels to take on Group J's top seeds Belgium on Monday having yet to lose under manager Craig Bellamy.
But the potential loss of Williams would be a blow to Bellamy having started every game since the former captain took charge a year ago.
Williams was also a key player for Forest last season, playing 35 times as the City Ground club qualified for Europe for the first time in 30 years.
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