Matt Cain did an almost impossible thing Wednesday, but he made it look easy, clean, obvious and inevitable.

That's how the epic players do it, you know. Cain didn't trip into greatness -- he seemed to waltz toward it, in complete control, in total rhythm, and destined to burst to the finish line as the crowd roared.

He got there. Man, did he get there.

Cain threw only the 22nd perfect game in major league history, retiring all 27 Houston Astros he faced, and it's the first ever for the Giants franchise.

And in a larger sense, he showed that he's now the true face, foundation and modest soul of the Giants -- their centerpiece and now their walking, pitching piece of history.

Throughout, from my vantage point via the TV cameras on this night, from about the second inning Cain seemed almost serene, like he was communing with a higher level, and all that was left to do was get through it.

The Cain serenity was broken only twice:

In the sixth inning when Cain cheered after Melky Cabrera ranged to the left field wall to haul in a deep fly by Chris Snyder. And then in the seventh, when Cain raised his arms after Gregor Blanco made an incredible diving catch of Jordan Schafer's blast into the right-center field gap.

But the rest of it was 125 pitches of calm precision and, yes, perfection.

"Wow," Cain said afterward, before he kissed his wife Chelsea in the dugout and then was doused with water by his teammates.

But through all that celebration, he never once looked like he was out of control or shocked -- he just looked content.

Such a very Cain reaction.

Cain's 14 strikeouts tied Sandy Koufax for the most-ever in a perfect game. The Astros didn't just look dominated, they looked demoralized by what Cain was throwing.

Rocket fastball. Razor sharp slider. Diving changeup. Very few pauses, just a glance to see Buster Posey's sign, then a dart precisely into Posey's glove.

"That's up there with the most nervous I've ever been on a baseball field," Posey said on Comcast.

And in classic Cain form, he credited his teammates for most of this: Posey for calling the game, and, of course, those two outfield catches.

"The sixth inning and seventh inning, those two unbelievable catches -- that changes the whole thing," Cain said moments after the final out, talking to Comcast SportsNet Bay Area.

You could say that Cain has been circling this moment for years now; he has taken no-hit stuff to the mound dozens of times in his Giants career, and he has gotten deep into games two or three times a year without giving a hit.

And each previous time, Cain couldn't get to the finish line. It wasn't the right time.

It was odd that Cain looked like he should throw one but couldn't, and then Jonathan Sanchez out of nowhere threw the first San Francisco Giants no-hitter in 33 years.

Sanchez's no-hitter, though, was essentially a fluke scenario. And you had a feeling that when Cain threw his first (of perhaps many), it would come with historic thunder.

And this one did.

Of course, until now, the lack of a no-hitter (or a Cy Young Award or, until just recently, a career record over .500) hadn't lessened Cain's inherent value to this team -- his new $112.5 million contract is proof of that.

But this moment is symbolic of something for Cain, the Giants and their fans, I believe.

Tim Lincecum has been the focal point of so much -- and rightly so -- for several years, but his struggles this season have changed that.

And Cain has been there all along, chugging along, staying just out of the spotlight but ready to rule the world and AT&T Park for a night and probably a lot longer.

This has been in the works for a while, but on this night, Cain absolutely became Mr. Giant -- their greatest player, their heart, and the man who just made perfection look inevitable.

Read Tim Kawakami's Talking Points blog at blogs.mercurynews.com/kawakami. Contact him at tkawakami@mercurynews.com.