West Ham United have confirmed that centre-back James Collins will be sidelined for around a month due to a torn left hamstring.
The 25-year-old Wales international was injured early on in the 2-1 defeat at Bolton Wanderers at the weekend, with Hammers boss Gianfranco Zola having feared that Collins was facing time on the sidelines.
A club statement read: "West Ham United can confirm that James Collins is likely to be out for four weeks with a hamstring tear in his left leg.
"An MRI scan confirmed the injury on Monday afternoon, which means he could miss the next three league games against Manchester City, Wigan Athletic and West Bromwich Albion.
"He could yet be fit for Wales' international fixtures against Finland and Germany in Cardiff on March 28 and April 1 respectively."
Collins didn't feature for the Irons until October this season, but has since been a first-team regular at Upton Park.