Usain Bolt on the medals stand Sunday night // Getty Images

Usain Bolt on the medals stand Sunday night // Getty Images

Track and field

U.S. No. 1 overall — in fast-changing world

BEIJING — With images of Jesse Owens and Luz Long on the big screens, Owens’ grand-daughter kicked off the final night of the 2015 track and field championships by presenting Usain Bolt his gold medal from the men’s 4×100 relay the night before.

This was, in a nutshell, the past and present of the sport. The future?

Aries Merritt after taking third place in the 110 hurdles // Getty Images

Aries Merritt after taking third place in the 110 hurdles // Getty Images

Track and field

Racing to a kidney transplant

BEIJING — These 2015 world track and field championships at the Bird’s Nest drew more than 1,900 athletes from more than 200 nations.

Every single one of them has a story. But no one has a story quite like Aries Merritt, your 2015 110-meter hurdles bronze medalist. In just a few days, he’s going to have a kidney transplant.

Usain Bolt wins the men's 200 // Getty Images

Usain Bolt wins the men's 200 // Getty Images

Track and field

Rivals, respect: Bolt comes up big, again, in 200

BEIJING — Usain Bolt defeated Justin Gatlin in the men’s 200 Thursday night at the 2015 world track and field championships, running the best time in the world this year, 19.55 seconds, to win hands-down.

If the result of this big-time showdown had been the other way around, if Gatlin had won, would earthquakes and tsunamis roil the planet? Would sinkholes swallow up large towns? Meteors flash across the sky?

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IOC

The vision thing

BUENOS AIRES — The intrigue, the mystery, the drama of the history-making 125th International Olympic Committee session got underway Wednesday, and though there are three essential decisions to be taken here — the 2020 Summer Games site, wrestling’s all-but-inevitable reinstatement and the election of the new president — there is one that overrides everything.

It’s that last one, the selection of the new president. Jacques Rogge’s 12 years as president are all but done. The IOC is about to turn to a new era.