Good stuff. I remember Darwin well.
But I believe that the American League went from 154 games to 162 in 1961, when the league enlarged and 154 could not be made to come out even with a symmetric schedule. With 7 opponents, 7 x 22 = 154, but with 9 opponents, 9 x 18 = 162.
So his 145 games is a slightly smaller, though still impressive, fraction of the total season.