Fall guy showing energy around Court One (6)
I believe the answer is:
Here is my best explanation:
'fall guy' is the definition.
'energy around court one' is the subsidiary indication.
'energy' becomes 'vim' ('vim' can be a synonym of 'energy'**).
'around' means one lot of letters goes inside another.
'court' becomes 'ct'.
'one' becomes 'i' (roman numeral).
'vim' placed around 'cti' is 'victim'.
'showing' is the link.
(Other definitions for victim that I've seen before include "Person killed, hurt or abused", "One is harmed or killed", "One suffers from adverse circumstances", "One affected by crime", "One who suffers the crime", "Subject of a crime", "One killed, hurt or duped", "One made to suffer", "Casualty or prey" and "Oppressed or suffering person".)