Gurjit Kaur (3', 39') scored a brace in the match while Neha (28'), Sangita Kumari (36'), and Salima Tete (56') also scored a goal each in the Pool A contest to help their team pick up the all-important win.
This is the first time women's cricket will be played at CWG and overall second time the sport will be played at the multi-sport event, with the last time being 1998
Mohammad Rizwan put on a good partnership with opener Abdullah Shafique to put Sri Lanka close to winning the game. Shafique finished the game at an unbeaten 160 runs.
Beaumont scored her ninth ODI century with a superb knock of 119 in the third and final game of the ODI series against the Proteas in Leicester on Monday.
The duo achieved this landmark during the first ODI of the three-match series against England here at the Kennington Oval on Tuesday, where they took 12 deliveries to reach the milestone.
USA openers Steven Taylor and Monank Patel were dropped in the first and second overs of the innings respectively and they made the most of the opportunities by laying a solid foundation