Are one-up playing in such competition? (8)
I believe the answer is:
european
'such competition?' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'are one-up playing' is the wordplay.
'playing' indicates an anagram.
'are'+'one'+'up'='areoneup'
'areoneup' anagrammed gives 'EUROPEAN'.
'in' is the link.
Can you help me to learn more?
(Other definitions for european that I've seen before include "Dubliner, Londoner, Berliner, for instance" , "'Belgian, Spaniard or Greek, say (8)'" , "Of particular continent" , "Pole, perhaps" , "possibly from Italy" .)