Type of pitch for football coach - the one responsible for the team's results after making the most of promotion (5,7)

'the one responsible for the team's results after making the most of promotion' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'type of pitch for football coach' is the wordplay.
I cannot quite understand how this works, but
'pitch' could be 'sales' ('sales pitch' can be a synonym of 'pitch') and 'sales' is located in the answer.
'coach' could be 'manager' ('manager' can be a synonym of 'coach') and 'manager' is located in the answer.
This accounts for all the letters.
This explanation may well be incorrect...

Can you help me to learn more?