Black mark put me into same boring old spin (7)
I believe the answer is:
demerit
'black mark' is the definition.
(a black mark marks a demerit or fault)
'me into same boring old spin' is the wordplay.
'into' is an insertion indicator.
'same boring old' becomes 'tired' (tired can mean boring or familiar).
'spin' says the letters should be written backwards.
'me' placed inside 'tired' is 'tiremed'.
'tiremed' in reverse letter order is 'DEMERIT'.
'put' acts as a link.
(Other definitions for demerit that I've seen before include "Feature deserving censure" , "Fault, defect" , "Conduct that deserves censure" , "Fact deserving censure" , "Something deserving censure" .)