The left-handed batsman made his debut in first-class cricket, representing South Australia in a match against Victoria in 2015. Lehmann swiftly made his mark on Australian cricket, particularly with a remarkable double century against Tasmania. In a partnership with Callum Ferguson, their combined efforts yielded a substantial 378 runs. Lehmann’s influence extended to the BBL, where he played a pivotal role in securing a thrilling victory for the Adelaide Strikers against Hobart in BBL|05, notably by hitting a crucial six off Simon Milenko’s final ball. Following his father’s path, Lehmann also signed with Yorkshire in the County Championship, where he added another first-class century to his name. Not limited to his batting skills, he demonstrated his bowling abilities by claiming the important wicket of Shane Watson in the Strikers’ convincing win over Sydney Thunder in BBL|06. Lehmann further follows in his father’s footsteps as he takes the helm of his state team in the 2018 JLT Cup.