Eva Mendes having one-sided rivalry with Jessica Chastain!

Actress Eva Mendes is reportedly having one-sided rivalry for roles with Jessica Chastain.

Radaronline.com reports that a source close to the situation said that the two actresses share the same agent, and "Eva has informed her that any role Jessica goes up for, she wants to audition for as well."

Mendes, 40, "feels an intense one-sided rivalry that stems from when she lost out to Jessica for the role of Maya in 'Zero Dark Thirty'.

"Eva desperately wanted to be considered for the part as she's tired of being typecast as a love interest and wants to be a leading lady," added the source.

Their agent is caught in the middle and is trying hard to keep them apart and on different career tracks.

"But Eva's declaration that she wants to audition for the same roles has made things all the more complicated.

"They are obviously two completely different types. Jessica's pretty much in the dark about it but it's only a matter of time before she hears that Eva's reading for the same parts," the source said.