Sophie, who wore a chic pale pink coat and matching trousers for the engagement, was left blushing as she repaired the table's barriers she had knocked out of place during the fast-paced game.
The Countess of Wessex with Paralympic silver medal winner Ben Rushgrove
The 49-year-old clasped her hand over her mouth when she realised she'd hit the green barricade, laughing uproariously with the college's patron Paralympian Ben Rushgrove - who had been explaining the game's rules.
Sophie Wessex gets bridal henna tattooone month ahead of 15th wedding anniversary
During her appearance, Prince Edward's wife met with students at the college, which specifically caters for disabled children.
The Countess of Wessex
The mum-of-two was shown around the building by PE teacher Ellie Whitehead, pausing to chat to pupils along the way, before unveiling a plaque commemorating her visit to the outdoor sporting facilities.
The Countess of Wessex brightens rainy day in Oxfordshire
ITN newsreader Alistair Stewart, who is also a patron of the college, was also present during the Countess' visit.