The 14-year-old water polo player, from Killamarsh, is a member of the City of Sheffield Water Polo Club and England Talent Programme, winning gold as part of the North-East Under-16s team that won inter-district gold.
Oscar says: "I have been training hard with England talent this year. Training camps have taken place over a whole weekend once per month in Cardiff where he had five two-hour sessions in the pool and two one-hour strength and conditioning sessions over each weekend.
"The programme culminated in a six-day training camp at Millfield School in August, which consisted of two or three pool sessions every day and a strength and conditioning session, along with nutritional talks and team-building exercises .
"The highlight of the year was in May when I went with the squad to Croatia for a five-day training and competition camp with VK Primorje – one of the world's top clubs.
"I also attend the Regional Training Centre on Friday nights at Ponds Forge and am about to start training at a more elite session once per month, starting in mid-November.
"In July, I played for the NE region under-16s in the Inter-district Championships, with the team winning gold and dropping just one point in the whole tournament.
"In October, I captained my club under-15 team in the national age group competition in Manchester. The team won bronze medal and I was awarded MVP (most valuable player).
"September saw the start of the senior British Water Polo League and I was selected to play for Sheffield senior men's B team. In my debut game, at the age of 13, I became the youngest Sheffield player and possibly the youngest ever player to score in the men's British League."
"My long-term ambition is to play for Great Britain in the European Championships of 2020."