G, also known as Gio, is a prominent athlete with a rich history in wheelchair tennis. He began his journey in tennis at the age of six at the Helensburgh Lawn Tennis Club in Scotland. By 2005, at age 13, he transitioned to wheelchair tennis at the Scotstoun Leisure Centre in Glasgow.

| Season | Event | Rank |
|---|---|---|
| 2016 | Singles | WR |
| 2020 | Doubles | RU |
| 2016 | Doubles | RU |
| 2020 | Singles | B Bronze |
| 2012 | Singles | QF |
| 2012 | Doubles | QF |
| 2008 | Doubles | R32 |
| 2008 | Singles | R64 |
Gio made history by becoming the first British wheelchair tennis player to win a gold medal in the men's singles event at the 2016 Paralympic Games in Rio de Janeiro. This victory marked a significant milestone in his career.
In recognition of his contributions to sports, Gio was named Officer of the Most Excellent Order of the British Empire (OBE) in 2023. Previously, he had been appointed Member of the Most Excellent Order of the British Empire (MBE) in 2017. He was also honoured as an honorary freeman of Argyll and Bute, Scotland, in 2016.
In 2022, Gio faced a major setback when he sustained a ruptured tendon in his wrist. This injury led him to contemplate retirement. Reflecting on this period, he mentioned that it was a challenging time filled with rest and recovery efforts that seemed futile initially. However, with the support of medical professionals, he managed to recover and continue his career.
Looking ahead, Gio aims to win a gold medal in doubles at the 2024 Paralympic Games in Paris. This ambition reflects his enduring commitment to excellence in wheelchair tennis.
Throughout his career, Gio has received numerous accolades. He was named Tennis Scotland International Player of the Year for 2014 and 2015. In 2010, he received the Para Athlete of the Year award from Tennis Scotland. Additionally, he was honoured as Tennis Scotland Junior Male Player of the Year in 2009.
Beyond tennis, Gio enjoys supporting the Scottish football team Rangers. He had a memorable experience parading his gold medal at Ibrox Stadium after returning from the 2016 Paralympic Games.
Gio's journey is a testament to resilience and dedication. His story continues to inspire many within and beyond the sports community.
G, also known as Gio, is a prominent athlete with a rich history in wheelchair tennis. He began his journey in tennis at the age of six at the Helensburgh Lawn Tennis Club in Scotland. By 2005, at age 13, he transitioned to wheelchair tennis at the Scotstoun Leisure Centre in Glasgow.