DETROIT, Oct 27 - Detroit Tigers right-hander Max Scherzer does not know if he will face a do-or-die situation when he steps onto the mound to take on the San Francisco Giants in Game Four of the World Series on Sunday. A loss in Game Three on Saturday and the Tigers could find themselves trying to claw out of 3-0 hole or with a win, Scherzer could climb onto the hill at Comerica Park trying to even the best-of-seven series at 2-2. Either way, the hard-throwing right-hander will approach the game the same way as he pitches against the Giants' Matt Cain. ...