Exhausted and surprisingly due to perform first (6-3)
I believe the answer is:
played-out
'exhausted' is the definition.
(I know that exhausted can be written as played out)
'surprisingly due to perform first' is the wordplay.
'surprisingly' indicates anagramming the letters (a surprising ordering of the letters).
'perform' becomes 'play' (playing is a kind of performing).
'first' says to put letters next to each other.
'due'+'to'='dueto'
'dueto' is an anagram of 'edout'.
'edout' after 'play' is 'PLAYED-OUT'.
'and' acts as a link.
(Another definition for played-out that I've seen is " Exhausted, used up".)