The Sox' schedule is pretty hard the rest of the way, but I gotta believe they'll find a way to win six games (meaning 6-9 over the last 15). Of course, if they just go 3-12, NY needs to go 14-2 just to tie.
If NY sweeps Boston all six remaining games (of course they don't all get played in a row here), then Bos would have 101 wins with 9 games left, and NY would have 96 wins with 10 games left. Boston could go 3-6 and NY would have to go 8-2 just to tie.
It's not over till it's over, but it's just exceedingly difficult to see how NY could pull this off.