© 2014 MLB Advanced Media, L.P. All rights reserved.

8/23/2014 8:18 P.M. ET

No panic: Perez gets night off because of heat

ARLINGTON -- Stop, don't touch that panic button. Yes, Salvador Perez was not in the Royals' starting lineup on Saturday night against Texas. No, there was nothing wrong with him.

Just a day off from the relentless Texas heat.

"He's 100 percent good," manager Ned Yost said. "There's not a thing wrong with him."

Everyone is a bit skittish about Perez after he pinched the patella tendon in his right knee last Monday night at Minnesota, causing him to miss Wednesday night's game at Colorado. Then, after an MRI came back clean on Thursday's open date, he was back playing Friday night.

But with the temperature forecast for 99 degrees on Saturday and 100-plus on Sunday, Yost decided he didn't want his All-Star catcher playing back-to-back games inside 24 hours. So they had a chat.

Yost: You're getting one of the two days off, what do you want to do?

Perez: Ummmm, ahhhhhh. I'll play the day game.

Yost: OK, fine.

Later, in the dugout before Saturday night's game, Yost was putting Perez on a level with the great catcher Ivan "Pudge" Rodriguez, who spent many of his prime seasons with the Rangers.

"That's what I think: Sal is going to be one of the best catchers ever to come out of Latin America. He's strong, he's energetic, he's durable, he's athletic for a big guy. He's going to be every bit as good," Yost said.

"He's got to stay healthy, right? But he's so durable, he's got great leadership qualities, he's tremendous behind the plate, he's still got huge offensive capabilities. Pudge Rodriguez was great, but I think Salvy's got a chance to be great too. That's just my opinion -- even though it's a bit of an expert opinion."

Herrera enjoying being on roll

ARLINGTON -- Right-hander Kelvin Herrera has been on quite a roll.

After a rescue job in Friday night's 6-3 Royals win over the Rangers, Herrera had pitched 21 straight scoreless innings, dating back to June 27. Much to his surprise.

"Me? Wow?" he said with a grin. "That's pretty good, huh? Yeah, that's what I want, right?"

Yes, going into Saturday night's game, that was the second-longest such streak in the Majors. Only bullpen-mate Wade Davis had a longer scoreless streak, 22 2/3 innings.

Not only that but Herrera had not given up a home run all season -- in fact, since July 28, 2013. That was more than a year ago, but Herrera hasn't forgotten.

"July? Oh, yeah, against the White Sox," Herrera said. "I remember that -- against Conor Gillaspie. It was a low fastball. He hit a home run, line drive to right field."

No home runs this year. How many did he give up last year?

"Nine," he said. "Eight in the first half and one in the second half. The Gillaspie one was the only one in the second half."

After a couple of tours last year with Triple-A Omaha, Herrera got his command straightened out.

"The difference? Better location," he said. "I think that's the key, better location because last year I had the same velocity as I have this year. So maybe last year there were too many high pitches. This year, I'm keeping the ball down."

Closer Greg Holland was busy too on Friday night, getting his 40th save. He got to that plateau in Game 127, one fewer than Jeff Montgomery needed to reach 40 in 1993.

That plus a club record 47 last year made Holland the first Royals closer since Dan Quisenberry, 1983-84, to have 40 or more saves in successive seasons.

The Herrera-Davis-Holland threesome has been dynamite in the last three innings this season.

"Wade's doing a great job, Holland, too," Herrera said. "I hope we continue doing the same thing. That way, we can chase the dream, right?"

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