Upton's original play Riflemind opened with Hugo Weaving, playing an ageing rock star planning a comeback, at the Sydney Theatre Company on 5 October 2007, and received a  favourable review in Variety (magazine).
Riflemind, Upton's inaugural play, debuted with Hugo Weaving as a veteran rock artist planning a resurgence, at the Sydney Theatre Company on 5 October 2007, and was commended by Variety (magazine) for its favorable review.