PORT ST. LUCIE, Fla. — In his first spring as Mets manager, Mickey Callaway has endorsed some out-of-the-box ideas, such as not designating a specific closer to work the ninth inning.



Perhaps nothing has seemed further from the box, though, than Callaway floating the idea of Todd Frazier as a leadoff hitter last week.



Todd Frazier, leadoff hitter? The Todd Frazier who has not once in his major-league career batted in the top spot of the order? The Todd Frazier who’s hit 102 homers over the last three years? The Todd Frazier whose average has dropped from .273 to .255 to .225 to .213 the last four years?



That Todd Frazier?



Yes, that Todd Frazier.



Although you can color us skeptical that Frazier will ever actually be the first Met to step in the batter’s box for a game this season, the idea of Frazier as a viable leadoff man isn’t insane. And it speaks to one specific change the hitter made to his plate approach last...