Posters around the city show Usain Bolt with an astonished look on his face, his hands held high in triumph as he flies across the finish line. Under the image is the phrase, "Who faster?"

As if that's even open for discussion anymore.

Bolt dazzled yet again, breaking another world record at the world championships. This time, it was the 200 meters, which he finished in 19.19 seconds. He shattered his old world record by a stunning 0.11 seconds, the same margin he trimmed off the 100 earlier in the competition when he finished in 9.58.

These days, no one can catch him. No one can even push him.

"Who faster?"

How about who wants second?

"I didn't have that on my mind," Bolt said of the world record. "But I got it right so I'm just happy with myself."

Got it right, indeed.

In his race Thursday, the Jamaican went all out, holding nothing back. He grunted and grimaced throughout the race, attempting to propel himself just a little faster down the track.

And just as it was at the Beijing Olympics, his only competition was the clock. Even that didn't stand a chance. Bolt beat Alonso Edward of Panama by 0.62 seconds _ a landslide in sprinting.

"It was flabbergasting," David Alerte of France said after finishing eighth. "I don't have the words to explain."

No one does. Nor does anyone have game to really challenge him right now.

Jamaican teammate Steve Mullings tried to go out with Bolt, staying as close to him around the curve as anyone could. That only led to Mullings fizzling out near the finish.

"I ran myself out of a medal," said Mullings, who ambled home in fifth. "I did go with him but couldn't hang on."

It's not easy following Bolt and his high-striding yam-colored Pumas.

Shawn Crawford joked after the semifinals that the only way to beat Bolt was to trip him.

Right now, it's about as good of strategy as any. Bolt has completely changed sprinting.

"You don't want another competitor to get in your psyche, but he kind of does," said Crawford, who wound up fourth. "The world, including athletes, we start to expect something phenomenal."

He definitely can deliver.

Before the 200 race, Bolt stayed in his room playing video games. His opponents must have felt like as if were in a video game when they were on the track against him. He's become that good, that dominant.

Bolt clowned around at the start, just as he always does. He even made a gesture to the cameras, illustrating that he was about to take off like a jet leaving the runway.

He flew all right, around the bend, past the competition, through the finish line and straight into the record books _ again.

Bolt keeps finding ways to be even more impressive.

"The (9.58) is just crazy," Mullings said. "The (19.19) is just sick."

What's left for an encore?

"He's got an 18-second in him coming pretty soon," Mullings mused. "I just know it."

Bolt, who turned 23 on Friday, showed up at the track for the medal ceremony wearing a Chicago White Sox cap, drawing an instant gathering.

Then he began to entertain. It's a gift he has, just like sprinting. Bolt enticed the fans to clap, and started to shimmy along to the music.

Rain, what rain? He ignored the big drops. He was having too good of time. He obliged just about anyone who wanted an autograph, signing T-shirts, caps, French flags, German flags, anything, for about 30 minutes. One woman even took off her shirt to have him sign it, and it didn't even faze him.

It seems like nothing does.

Once Bolt gets through toying with the records in the 100 and 200, he might just step back into the 400 realm, which he ran when he was younger. He's hinted at the possibility.

If that becomes the case, former sprint star Michael Johnson thinks his mark of 43.18 seconds could be in jeopardy. That is, once Bolt make the transition to the demanding distance.

"It takes many years to learn how to train for the event and how to compete in the event," Johnson said. "If he's willing to put in the work, and hurt a little bit _ which he's told me he doesn't want to hurt _ but if he's willing to do that, I think it could be possible."

The signs around Berlin say, "Who faster?" But, really, there's no question about that.