Mr Griffiths was not born blind. At the age of two he had to have both eyes removed to stop the spread of a rare cancer called retinoblastoma.
He has been "totally blind" since the procedure but the setback has not stopped him from living a fulfilling life.
Previously he played international visually impaired cricket, representing England, as well as football.
"Life wasn't ever going to deal its cards to me. I deal my cards to it, and if it likes to send them back then I'll deal with them that way," he said.
"That was always me and it still is me."
He said he picked up tennis in 2019 because he "fancied a sport where you're on your own", which provided him with a change of pace from the other sports he played.
"Instead of being part of a team and part of a cog in a machine, I wanted a sport that was down to me. If [I make] a bad decision, it's my problem to deal with," he added.
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