Yes he has - in 2008 - see link below
www.buzzle.com/editorials/7-6-2006-101437.asp
he retired in 2008.
Richard Quinn - jockey - was born in 1961.
Richard Quinn, a prominent British jockey, announced his retirement from professional racing in 2020. Known for his skill and determination, he enjoyed a successful career, winning numerous races and accolades. After retiring, Quinn expressed his intention to remain involved in the racing industry, possibly focusing on training or mentoring aspiring jockeys. His contributions to the sport continue to be recognized within the racing community.
Richard Hughes - jockey - was born in 1973.
Richard Quinn has written: 'Samuel Marsden'
Mr Appleby is retired
Joseph Richard Quinn has written: 'China medicine as we saw it'
Richard Quinn - American football - was born on 1986-09-06.
No--she has an injured back and retired and is married.
#16 was retired when Richard retired, so nobody wore it after he did.
She may not be officially retired but she hasn't raced in about 10 years.
He's 5 foot 10.