London - Sunderland will be without winger Adam Johnson for a lengthy spell after he suffered a "serious" shoulder injury in his side's 4-2 opening day defeat by Leicester City on Saturday.
The Premier League club's website (www.safc.com) said Johnson would be out for "a minimum of eight weeks."
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"We have Jordi Gomez and Adam Johnson injured and Danny Graham also has some minor problems," manager Dick Advocaat said on Wednesday. "Adam will go to the hospital for a scan tonight and then we will know exactly what is wrong.
"It is a serious injury and it will be at least eight weeks."