It seems that you are having post traumatic ecchymoses...after playing foot ball.
may fade in 2 to 3 weeks.
It is harmlets condition and requires no treatment.
Tab vitamin C
and K may improve the disease.
Thrombophob oint may be helpful to fade the disease.
However , internal blood disorders may be ruled out.
For that you consult dermatologist
I hope you got my answer.
Dr. Ilyas Patel MD