The 'Not Afraid' rapper has picked up ten nominations at this year's ceremony - the most of any artist - but is said to be pessimistic about his chances.
Royce da 5'9", who recently signed to Eminem's Shady Records label, told MTV News: "It's funny, I just had the conversation with him about it. He doesn't think he's gonna win anything.
"He wouldn't bet me though, but I think he honestly thinks he's not gonna win - which I think is ridiculous!"
Royce said that he is a lot more upbeat about the night, adding "I think he's gonna win. We're rooting for him."
Eminem is up for awards including 'Song Of The Year' and 'Record Of The Year' for 'Love The Way You Lie', as well as 'Best Rap Album' and overall 'Best Album' for Recovery.
The 53rd Grammy Awards air Sunday, February 13 from 8pm ET/PT on CBS.
> Grammy Awards 2011 - The Nominees