Not feeling pressure in extremely close finish (4,4)
I believe the answer is:
dead heat
'extremely close finish' is the definition.
(as in a dead heat in a race)
'not feeling pressure' is the wordplay.
'not feeling' becomes 'dead' (as in a dead arm).
'pressure' becomes 'heat' (I've seen this before).
'dead'+'heat'='DEAD-HEAT'
'in' acts as a link.
(Other definitions for dead heat that I've seen before include "Racing tie" , "Tie for first place in race" , "Race in which no winner is apparent" , "Exactly tied race" , "Race result in which two competitors finish exactly even" .)