Cumulative distribution of O-star velocities (M_ini ≥ 15 M_⊙) in 30 Dor. The comparison radial-velocity (RV) distributions are from Sana et al. (2013). The term “field” refers to stars outside NGC 2060 and NGC 2070, and we show ten realisations of the inferred velocity distribution under the assumption that 30% of stars are rejuvenated binary products that appear younger by 30% compared to their true age (solid thin grey lines).