Sign and come up as opponents in a game swap places (5)
I believe the answer is:
aries
'sign' is the definition.
(star sign)
'come up as opponents in a game swap places' is the wordplay.
I cannot really see how this works, but
'opponents' could be 'es' (I've seen this in other clues) and 'es' is located in the answer.
'a' is present in the answer.
This explanation may well be incorrect...
'and' acts as a link.
Can you help me to learn more?
(Other definitions for aries that I've seen before include "Ram star sign" , "House" , "Stars" , "Zodiacal sign also known as the Ram" , "Philip -, English poet" .)