Shahjahan Khan has been on Tour since 2011, but started making real strides up the World Rankings over the last couple of seasons. The American had to wait three years before he made his first final on Tour, doing so at the Colony Ford Lincoln National Squash Academy Open, and that would become his first title as a professional a year later, as he beat Arthur Gaskin in the final in 2015. He reached the semi-finals of the Samson Seattle Open and the 6th Parco Roshan Khan Open in 2016, but had to wait until 2018 before he made another final. That c game at the Wakefield PSA, where he lost out to Juan Camilo Vargas. Khan claimed his second title later that year, beating Henrik Mustonen to win the Alliance Fabricating Ltd. Simon Warder Memorial Prostate Cancer Open, and he also had semi-final appearances at the 13th CNS International Squash Championship, Life Time Atlanta Open and Qualico Manitoba Open in the 2018-2019 campaign. At the end of 2019, the American took two more victories,