The powerful 19 year old came off mid-way through the second half after appearing to pull up. Moses has been unable to train properly and has received the results of a scan on the injury just yesterday.
The results have shown a slight strain of the groin, and the injury seems set to keep Moses on the sidelines for up to three weeks. He is certainly a doubt for the games with Chelsea this weekend, and then Tottenham the following week.
This news will add further insult to injury for Martinez who has had to deal with the N'Zogbia saga this week.