The 28-year-old was forced off after setting up the only goal against Manchester United last week and will now miss clashes with Rapid Vienna and Brentford.
Fredericks had started a second game in quick succession having played 90 minutes in the 2-0 victory over Dinamo Zagreb.
During the 2019/20 season, Fredericks played 27 times in the Premier League and would’ve relished the opportunity to force his way past Vladimir Coufal once again.
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Fredericks and Hammers fans alike will be pleased this injury doesn’t look too serious.
However, having made such a bright start to the game at Old Trafford, there is no doubt it was a cruel blow to be forced off – as proven by the disappointment etched all over his face.
A more attacking-minded right-back to Coufal, the ex-Fulham ace offers a perfect foil to the Czech star.
In the final year of a deal at the London Stadium, the £2.25million valued ace will be desperate to get fit and prove there is a future as an Iron beyond this season.