But Radford also said the setback should make the club stronger.
A 0-0 draw last night left the sides locked at 1-1 which resulted in spot kicks which the Welsh underdogs won 5-3.
Speaking on social media, Radford said: “I’m hurting after that as my love for this club is beyond words.
“This setback should only make us all stronger as one united club.
“A special mention to our supporters, who have been magnificent this season, and the noise generated tonight was incredible.”