Duffy then Shields as starters for Friday's DH

DETROIT -- The Royals and the Tigers were employing some gamesmanship in naming their starting pitchers for Friday's day-night doubleheader, but now they're finally in place.

The Royals will match left-hander Danny Duffy against Tigers ace Justin Verlander in the afternoon game and right-hander James Shields against lefty Jose Alvarez in the night game.

How did the Royals decide?

"We determined it the exact same way they determined it," Yost said. "Which game do you want to throw, James? Which game do you want to throw, Justin?"

Both Duffy and Alvarez are being called up from the Minors as the 26th player added to the roster on days that a doubleheader is played.

Duffy made his first Major League start since Tommy John surgery on Aug. 7 against the Twins with a no-decision, then pitched one inning for Triple-A Omaha on Monday.

"It was just a little brush-up on everything," he said. "I feel great."

Duffy's previous brief stay with the hot Royals this season was a revelation.

"I've been around for two days of it and it's definitely a change from years past, so I'm excited to do my part, whatever that may be," he said.