Bobsleigher Serita Shone says her decision to retire was "exceptionally hard", after she missed out on Great Britain selection in 2014.
However, despite a strong 2014 trials she was overlooked by GB Bobsleigh.
"It was an exceptionally hard decision because I don't like admitting defeat," Shone told BBC Radio Solent.
|"On paper, I should not have been defeated. Whatever political or financial reasons they felt made the other person more selectable has ultimately ended my career."|
"After such a successful summer and after doing really well in the trials and finishing top of the pile in nearly every one, I was really confident going into the selection process.
"Unfortunately they decided to select someone else. Although I accept the decision, I do not agree with the decision based on my physical performance during the trials."
Weymouth-based Shone finished first and second at the trials but was overlooked by British Bobsleigh in favour of Nikki McSweeney.
"It was a driver development position, anyone could apply or transfer into it," added Shone.
"Since I've come back into sport, the training I've done has been very driver specific so I had extra skills to take into the pot.
"That's what hurt the most. I feel I had to work harder than anyone else."
The former heptathlete admitted that funding issues contributed to her decision to retire.
"I've put a lot of time, effort, money and dedication into it, and put a lot of things in my life on hold in order to get to a point where I thought I was selectable," she added.
"Funding is a massive issue and I could not justify the money I was spending and the money others were sponsoring me with if the team weren't selecting me.
"On paper, I should not have been defeated. Whatever political or financial reasons they felt made the other person more selectable has ultimately ended my career."