Baseball’s bunt—that quirky technique in which a hitter pivots to face the pitcher, grips his bat like a lacrosse stick, and tries to deaden the ball into that grassy no-man’s land in front of home plate—has been under attack for years. Yet every fall, when the toil of 162 games begins to wear out the muscles of big sluggers and only playoff pitchers take the mound, the bunt reemerges.