Team up with athlete on the right for a change, who might use a running blade (7)
I believe the answer is:
amputee
'a change who might use a running blade' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
'team up with athlete on the right' is the wordplay.
'up' indicates an anagram (letters get chucked up).
'with' is an insertion indicator.
'athlete' becomes 'pu' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'on' is a charade indicator (letters next to each other).
'right' suggests the final letters (the letter on the right of the word).
The last letter of 'the' is 'e'.
'team' is an anagram of 'amte'.
'amte' enclosing 'pu' is 'ampute'.
'ampute'+'e'='AMPUTEE'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for amputee that I've seen before include "Someone who has had a limb surgically removed" , "One with missing limb" , "Person with a limb severed" , "Possible Paralympian" , "Person who has had limb removed surgically" .)