Poor shots caught, making marks on players' shirts (5)
I believe the answer is:
logos
'marks on players' shirts' is the definition.
'logos' can be an answer for 'marks' (logo is a kind of mark). I am not certain of the 'on players' shirts' bit.
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for logos that I've seen before include "philosophical principle" , "The Word of God" .)