ST. PETERSBURG -- It's not exactly revolutionary, but the high-flying Kansas City Royals are changing the face of baseball with the way manager Ned Yost uses his talented bullpen. Other teams are adopting the successful formula, and I wouldn't be a bit surprised if in seasons to come, it becomes the accepted way, just like today's widely used defensive shifts.
For the Royals, it's known as HDH -- flame-thrower Kelvin Herrera in the seventh inning, dominant Wade Davis in the eighth and closer Greg Holland in the ninth. Opponents better attack Kansas City in the first six innings, because with HDH, it's lights out. Each late-inning reliever has a role, and each is essentially a closer in his assigned frame.
Hal Bodley, dean of American baseball writers, is the senior correspondent for MLB.com. Follow him @halbodley on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.