You have to make 30 plays unless 60% or better is guaranteed even if the remainder are counted as losses. Thus 16-10 would be counted as 16-14 with 4 losses by forfeit.
This is a pretty obvious condition, since otherwise once you got 60% or better, you could just quit, say at 1-0, 2-1, 3-2, 6-3, etc.
Note without Rule #7, once you got 6 more wins than losses and an even # of games left, you could just select both sides of a game to guarantee 60% (possibly even one side one minute before midnight and the other side one minute after midnight).