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06/16/12 2:30 PM ET

Calf issue isn't likely to hold back Mazzaro

ST. LOUIS -- Right-hander Vin Mazzaro, taken out after six innings Friday night because of a tight calf muscle, is likely to make his next start as scheduled.

"He's going to be fine," manager Ned Yost said before Saturday's game against the Cardinals. "It wasn't stiff and tight [Saturday] morning, so that's a good sign."

Mazzaro shut out the Cardinals for six innings of the Royals' 3-2 win and boosted his record to 3-1, while lowering his ERA to 2.57. He's scheduled to pitch on Wednesday at Houston.

The Astros better be on their guard, too, when Mazzaro comes to the plate. He singled off the Cardinals' Kyle Lohse for his second hit this season. That made Mazzaro the first Royals pitcher to have two hits in a season since Zack Greinke in 2008.

Further, that matches the club record for hits by a pitcher in a season since the advent of the designated hitter in 1973. The others, in addition to Mazzaro and Greinke, were Jeremy Affeldt in 2003 and Jeff Suppan in '01.

Royals still buzzing about Moustakas' throw

ST. LOUIS -- If there were any "Mooooooose!" calls in Busch Stadium at the end of the Royals' 3-2 win on Friday night, they were drowned out by the collective groan of a full house of Cardinals fans when Mike Moustakas' throw ended the game.

Royals manager Ned Yost was even more impressed by Moustakas' game-saving throw after reviewing the video on Saturday morning.

"Until I saw the replay, I didn't realize how dynamic that throw was," Yost said.

The play came as the Cardinals' Tyler Greene, after sliding into second base and third, headed home while the overthrown ball -- as the pursuing Moustakas recalled it -- bounced off a post next to an opening on the third-base dugout, ricocheted onto a second post and rebounded back to him.

"I thought those two posts were closer together," Moustakas said, examining the several-inch gap on Saturday morning.

Anyway, the ball stayed out of the dugout, was still live as Moustakas grabbed it, wheeled and threw to catcher Humberto Quintero.

"It didn't take a perfect tag, because the throw put him in a position to make the tag. So it all revolved around the throw, and I didn't realize how great the throw was until I watched it on replay today," Yost said. "I mean, Q didn't have to move. He caught the ball and it was right there. If he'd have had to reach for it and come back, [Greene] would have been safe. So the off-balance throw that [Moustakas] made and put it in a perfect spot to make the tag with the throw was a tremendous play."

In the aftermath, some Cardinals players were calling for expansion of instant replay reviews, certain that Quintero's tag was either late or missed entirely. If that had been the case, the umpires might have been up half the night trying to figure that one out. Home-plate umpire Alan Porter's call was immediate and emphatic, and the replays looked rather inconclusive.

"We were due a break like that," Yost said.

Yost wants his Royals to beat the heat

ST. LOUIS -- With the temperatures heading into the 90s at Busch Stadium on Saturday morning, manager Ned Yost cautioned starting catcher Brayan Pena and other players to take it easy in pregame practice.

"A day like this, you want them to kind of come out and get their blood going a little bit, take a few swings and get out. It's actually hotter than I anticipated it being. I just wanted them to come out, take a few swings, take a few ground balls and come in," Yost said. "Save their energy for the game."

Crown points

• Continuing to go for a strong defense, the Royals are keeping Eric Hosmer out of the outfield and platooning him with Billy Butler at first base in National League cities. That would mean Butler, on the bench in St. Louis, likely would go against left-handers J.A. Happ and Wandy Rodriguez in the next series at Houston.

• Closer Jonathan Broxton, after recording his 100th save on Friday night, marked another milestone on Saturday -- his 28th birthday.

• In the 15 games from May 29 through Friday night, Royals pitchers combined for a 2.89 ERA -- third-best in the Majors after the Yankees' 2.56 and the Giants' 2.71. Kansas City's record in that span was 9-6.

Dick Kaegel is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.