ARLINGTON -- As Royals manager Ned Yost continues to juggle his starting rotation, he decided that right-hander Vin Mazzaro will start Tuesday night's game against the Rangers.
Left-hander Danny Duffy became the second starter to go on the disabled list on Monday and, pending a second medical opinion, he seems headed for Tommy John surgery on his elbow. Left-hander Jonathan Sanchez is also out with left biceps tendinitis.
Duffy's next start would have been on Friday night during Interleague Play against the D-backs at Kauffman Stadium. Now either Luis Mendoza or Nate Adcock will fill that spot.
Mendoza replaced Duffy in the first inning on Sunday and earned the 9-1 victory over the White Sox. He began the season in the rotation and has a 2-2 record and 4.76 ERA. Adcock, recalled after just two days on the Triple-A Omaha roster, had served as the long man out of the bullpen.
The other current starters are Bruce Chen, Luke Hochevar and Felipe Paulino.
Hosmer moved to No. 2 hole by Royals
ARLINGTON -- Slugger Eric Hosmer isn't a typical No. 2 batter, but with his average at .180 entering Monday, manager Ned Yost decided to try something.
So for Monday night's game against Texas, he put Hosmer second behind leadoff batter Jarrod Dyson for the first time this season. Hosmer started the season batting third (13 times), was tried in the fourth spot (17 times) and hit sixth in the last two games.
"I want to get him more fastballs," Yost said. "If he's behind Dyson, if Dyson's on base, he'll get more fastballs. We're trying to get him going. When he's in the six-hole, they're not pitching to him."
Behind Hosmer were Billy Butler and Alex Gordon.
"In the two-hole, with Billy and Gordo behind him, especially with Dyson on, he'll get more stuff to hit," Yost said. "So it's a shot in the dark to see if we can get him going."
Hosmer batted second five times last season, although it should be noted that he hit just .190 (4-for-21) in those games.
"And in high school, my senior year I batted second," he said.
That must have gone pretty well, because he hit .470 that year for American Heritage High in Plantation, Fla.
"If Dyson gets on, they're going to want to come after me and not let him steal the base," Hosmer said. "Then I've got Billy protecting me, so hopefully it's a nice spot for me. So I'm looking forward to it. Hopefully, it'll turn us on, and maybe [I'll] stay there."
With hamstring better, Moustakas back at third
ARLINGTON -- After sitting out two games with a sore left hamstring, Mike Moustakas was back at third base on Monday night against the Rangers.
"Everything's good," he said. "It wasn't that bad, but [manager Ned Yost] wanted to be a little bit cautious and, yeah, it felt good. I was able to go yesterday and the day before, but Irving [Falu] did a good job of filling in for me and helped us get two [wins], so it worked out well for us."
Falu was 3-for-9 in the two wins at Chicago and played well at third base.
"He's a real handy guy," Moustakas said. "He's always been a handy guy since the first time I met him in the Minors. He's always been able to do everything. He's done a nice job, he's a real good ballplayer."
Dick Kaegel is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.