Respuesta :
In this this excerpt from "The Kick and the Click.”, we can interpret that Ricky is:
He is frustrated, because he does not understand Anthony’s decision to pursue another hobby.
We can understand Ricky's attitude and feelings by reading this:
"A sharp shove between the shoulder blades jolted Anthony’s mind from its wandering" it was Ricky who pushed his brother.
"Ricky rolled his eyes and walked across the field to warm up with his teammates," by rolling his eyes, Ricky is showing frustation and anger.
So the final answer is:
He is frustrated, because he does not understand Anthony’s decision to pursue another hobby.