I wear your cotton/poly Ts all the time. Wish you had v-neck.
However, I would not put a patch on my good (expensive to me) Adidas clothing unless I was paid or given a discount for doing so. Having such a patch without sponsorship just screams "poser" to me.
As well, I would I not put a bumper sticker on my car.
Bye, bye Babolat. Going to Pacific.