Remnant outcomes of 12 massive binaries, with initial parameters as given in Table 2, when evolved with updated BSE (black filled squares) and StarTrack (magenta filled squares). Plotted along the X-axis are the binaries’ primary (the more massive member) ZAMS masses and the masses of the single remnant or of the heavier of the two remnants of the binary evolutions are plotted along the Y-axis. Because of the adopted NS upper mass limit, a remnant of > 2.5 M_⊙ (≤2.5 M_⊙) is a BH (NS). These BSE and StarTrack evolutionary calculations are done for the F12-rapid+B16-PPSN/PSN remnant-mass model with the same choices of evolutionary parameters; the values of the most relevant parameters are Z = 0.0001, α_CE = 1.0, and f_mrg = 0.5.