[9][10] Lambert was a bronze medalist in Women's Singles at the 2009 Pan American Championships in Cali, Colombia, when she lost to Bolivian Carola Loma, 15-3, 15-14.

[11][12] At the 2009 Canadian National Racquetball Championships, Lambert defeated Josée Grand'Maître, 15-10, 13-15, 11-7, in the semi-finals of Women's Singles, but lost the final to Jennifer Saunders, 15-10, 15-8.

[14] Lambert played Women's Doubles with Geneviève Brodeur at the 2010 Pan American Racquetball Championships in San Pedro Sula, Honduras, where they lost to Mexicans Samantha Salas and Susana Acosta in final, 15-11, 15-4, after defeating the Dominican Republic's Claudine Garcia and Yira Portes, 15-2, 15-4.

[18] Lambert played Women's Doubles with Brandi Jacobson Prentice at the 2010 World Championships in Seoul, South Korea, and they lost in the semi-finals to Mexicans Paola Longoria and Samantha Salas, 15-8, 15-6.

Lambert was a runner up in Women's Singles at the 2011 Canadian Championships in Nova Scotia, where she lost to Jennifer Saunders, 15-11, 15-7, in the final, after defeating Josée Grand'Maître, 4-15, 17-15, 11-6, in the semi-finals.

[26] Lambert only played doubles (with Michèle Morissette) at the 2013 Canadian Championships in Langley, British Columbia, and they were 2nd to Josée Grand'Maître and Jennifer Saunders.

[28] Lambert is the fifth Canadian to be ranked in the women's pro top 10 following Christie Van Hees, Jennifer Saunders, Lori-Jane Powell, and Heather Stupp.

[28] Lambert's first LPRT semi-final on the Ladies Professional Racquetball Tour was in September 2013 at the Abierto Mexicano de Racquetas tournament in Toluca, Mexico.

Lambert upset 2nd seed Rhonda Rajsich in the Round of 16, then defeated Maria Paz Muñoz in the quarter-finals before losing to Cristina Amaya in the semi-finals in four games, 11-9, 6-11, 11-0, 11-5.

But in the Women's Team event, Lambert and Jennifer Saunders defeated Argentina, 2-0, in the quarterfinals, and then lost to the USA, 2-0, in the semi-finals, resulting in bronze medals.

[34] In August 2016, Lambert became the second Canadian to win a women's professional event after Christie Van Hees, as she won the Atlanta Championships in Lilburn, Georgia.

[28] In 2018, Lambert won Women's Doubles at the Canadian Championships[38] in Winnipeg, Manitoba, where she and Jennifer Saunders came out on top of a four team round robin.

[40] Lambert played Women's Doubles at the 2021 World Championships with Alexis Iwaasa, and they lost in the Round of 16 to Argentina's Natalia Mendez and Valeria Centellas, 15-3, 15-4.

[43] At the 2022 Racquetball World Championships in San Luis Potosi, Mexico, Lambert played Women's Doubles with Michèle Morissette, and they reached the semi-finals, but then lost to Argentina's Natalia Mendez and Valeria Centellas, 11-6, 11-4, 11-2.

[44] She also played Mixed Doubles with Samuel Murray, and they beat Americans Michelle Key and Alejandro Landa in the quarterfinals, 8-11, 11-7, 12-10, 10-12, 11-5, and Bolivians Jenny Daza and Conrrado Moscoso, 11-9, 11-9, 12-10, in the semi-finals, but then lost in the final to Mexicans Rodrigo Montoya and Samantha Salas, 11-3, 9-11, 11-8, 11-9.