Bath, a Sikh-Punjabi, made her West Ham Women's debut in her first game.
Manager and former England international Paul Konchesky gave a young side 25 minutes off the bench as they lost a pre-season match.
She made her first appearance for the Hammers at the age of 16 years and 11 days and put in a composed performance in front of 350 fans.
The rest of the first-team squad watched on and supported their younger team-mates.
Micky Singh, a spokesman for the Apna England official supporters' group, told Sky Sports News that the news will give hope to so many girls from all walks of life.
Everyone at Apna England is proud of Roop and her family, who have never given up and fought to provide the best opportunity for her talent to shine.
The Sky Sports News story made the country's first-Punjabi Sikh female Member of Parliament happy.
It's wonderful to see young Sikh girls smashing glass ceilings, it's a fantastic achievement by Roop and I wish him all the best. It's uplifting for everyone.
Dan Mlinar said the match was a good learning experience for the players who will be part of his squad.
He said it was nice for the academy players to be back on the grass.
"We had players making their West ham debut, we had players playing in their first-ever match against older players, and for some it was their first-ever match in front of a crowd!"
It was a priceless experience for them all, and I'm sure they will take a lot from it. If they want to be a part of the first-team squad, they need to get to a level that they've seen before.
"This is a good time for these youngsters to be at the football club, because there is a clear ethos here of being able to promote from within if we have the right caliber of player that's ready for first-team action."
The WSL academy team will have a lot of young players this season, but I saw enough to show that they have something. Since we returned for pre-season, we've only had about five or six sessions, so I'm excited to see the girls grow.
The mystery girl left Sky Sports News viewers stunned in March last year when she did over 1,100 kick-ups for International Women's Day.
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She told Sky Sports News at the time that she wanted to test herself in a new environment after two spells with Queens Park Rangers.
The team that won the Capital Girls County Cup for the first time in the club's history was made up of a graduate from the Centre of excellence.
Last season, Bath played in a 4-3 win against the Dons.
At the end of last season, John Ryan, the coach at the former club London Bees, pointed to the player's technical and tactical ability as a sign of her potential.
Stephen Opoka is a renowned talent developer and Mlinar is a lifelong Hammers fan.
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