This is the 14716th most frequent Turkish word.
rakipleriyle
"With their competitors/rivals."
Here, 'rakipleriyle' refers to the team competing against opposing teams.
Takım rakipleriyle güçlü bir mücadele verdi.
The team put forth a strong challenge against its competitors.
The word 'rakipleriyle' here indicates that Mustafa is interacting with his competitors.
Mustafa rakipleriyle dostça davranıyor.
Mustafa acts amicably with his competitors.
In this sentence, 'rakipleriyle' is used to denote the company is contesting actions against other companies.