DETROIT -- Eric Hosmer did something on Friday that no Royals hitter had done since 1998. He banged a home run in each game of a doubleheader.
The last Royal to do that was Dean Palmer on Sept. 11, 1998, in a doubleheader split against Seattle at Kauffman Stadium.
Thirteen of Hosmer's team-high 14 homers have come since June 13 at Tampa Bay. He had just one homer in his first 226 at-bats.
"It shows that he's back. All the worries people had," manager Ned Yost said. "It's an adjustment period for these young hitters. They have to go up and they have to go down. I think that the real change for him came when George [Brett] and Pedro [Grifol] came in. What they did was get him into a position where he could start gaining confidence again. And the biggest factor in his game right now is when he steps in that box, he feels like a hitter."
Brett and Grifol joined the Royals as hitting coaches on May 30. Brett has since bowed out, but Grifol continues to tutor Hosmer and the other hitters.
"It's a crazy thing," Yost continued. "With young hitters, they can lose confidence, they can lose focus with a couple of bad at-bats. And the more at-bats you get and the more time you spend in this league, you learn how to deal with that. You learn you're going to get through that. And confidence is a great thing."
Hosmer obviously feels it.
"Pedro and I have been spending time in the cage. We've got a plan and it's really working out for me now and the confidence is really there," he said.
Moustakas returns to lineup with left calf better
DETROIT -- Mike Moustakas is back.
Moustakas, after missing five games because of a tight left calf, was at third base and batted sixth for the Royals in Saturday night's 6-5 loss to the Tigers.
"I'm real anxious," Moustakas said before the game. "I'm ready to get back in the lineup and play some baseball again."
He played for the first six innings and went 2-for-3 with an infield hit and a looping single to right field. He also struck out.
In the sixth inning, after the Tigers had put left-handed reliever Drew Smyly into the game, manager Ned Yost sent right-handed-batter Jamey Carroll out to pinch-hit for lefty Moustakas.
"He was fine, but his leg was starting to tire a little bit," Yost said. "He didn't hurt it anymore, but when you're at about 80 percent, your strength level is lower and it was starting to get a little sore."
Carroll finished the game at third base.
Moustakas, injured while running the bases on Monday night, is hitting .306 with 13 RBIs after the All-Star break and has played an important role in the team's vastly improved record.
In the days immediately following the injury, there was concern that Moustakas might have to go on the 15-day disabled list.
"He did really good," Yost said. "We didn't know. That's why we waited to see if he could recover quick. But I watched him take swings in the cage. He looks normal. He looked great on ground balls, he did some agility stuff."
Meantime, center fielder Lorenzo Cain remained in Kansas City while on the DL with a pulled oblique muscle. He's eligible for reinstatement in a week, but that's an injury that's usually slow in healing.
Newly acquired Emilio Bonifacio started in center field for the second straight game. He had filled in for Moustakas at third base in the first two games at Detroit.
Duffy to make next start for Triple-A Omaha
DETROIT -- Left-hander Danny Duffy, who beat the Tigers in the first game of Friday's doubleheader, is scheduled to make his next start for the Triple-A Omaha Storm Chasers.
Duffy was the 26th player allowed added for a doubleheader and was optioned back to the Royals' Triple-A club after Friday's games.
He stayed in Detroit, however, and will do a side session, fly back to Kansas City with the team and then rejoin Omaha. He'll pitch on Wednesday night against New Orleans.
Duffy is expected to rejoin the Royals when rosters are expanded on Sept. 1.
Holland saves two in twin bill for second time in '13
DETROIT -- When Royals closer Greg Holland notched a save in both games of Friday's doubleheader, it was the second time he'd accomplished that this season.
Holland also had saves in both ends of the April 21 day-night doubleheader sweep at Boston. That twin bill was scheduled after the postponement of a game because of the police manhunt for the Boston Marathon bombers.
No pitcher had done a double-double since Dave Veres of the Rockies in 1999.
Another doubleheader distinction for the pitching staff: The one run in the two games on Friday matched the fewest allowed by the Royals since Aug. 13, 1991, in a 5-0, 8-1 sweep at Yankee Stadium. Kevin Appier pitched a three-hit shutout in the opener and Mike Boddicker worked six innings to win the second game. The Yankees' losing pitcher in the second game? Dave Eiland, now the Royals' pitching coach.
The six hits the Tigers managed in Friday's two games were the second fewest allowed by Royals pitchers since Sept. 2, 1977. On that day at Kansas City, Andy Hassler and Doug Bird combined on a four-hit, 3-1 win over Milwaukee. But in the second game, Paul Splittorff beat the Brewers, 3-0, with a one-hitter. Pinch-hitter Charlie Moore singled with two outs in the eighth.
Dick Kaegel is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.