Predicted masses of the components of massive binary systems after RLO and the formation of a SR. Top row: OB star masses coloured according to their companion type and marked with dots if we expect an emission-line star. The inlays in the upper right corners focus on the upper mass end. Bottom row: BH masses with dots in case of a OBe companion. Note: the vertical axis is logarithmic. Left: Total numbers. Right: Case A RLO (top) and B (bottom) separately.