Single old females escape for adventure perhaps (3,3)
I believe the answer is:
run off
'escape for adventure perhaps' is the definition.
(as in running off to go on adventures)
'single old females' is the wordplay.
'single' becomes 'run' (cricket).
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'females' becomes 'ff' (the abbreviation for female repeated).
'run'+'o'+'ff'='RUN-OFF'
(Other definitions for run off that I've seen before include "exit at speed" , "tie-breaker" , "Drain" , "Escape" , "Make copies" .)