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?

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

This, probably more than anything, from Seb Coe, the newly elected president of the IAAF, the sport’s governing body, taking over from Lamine Diack of Senegal, who served for 16 years: “We are more than a discussion of test tubes, blood and urine.”

He also said at a Sunday news conference, “We have a sport that is adorned by some of the most super-human outrageously talented people in any sport. Our challenge is to make sure the public know there are other athletes,” not just Bolt, “in our sport.”

This is not — not for a second — to discount the import of doping in track and field. But it’s clear things are changing.

The men’s 100 is often thought to be the dirtiest race in the sport; not so; a read of the historical record shows that, without question, it’s the women’s 1500.

And now that times in that event are often back at 4 minutes and over — the final Tuesday saw a slow, tactical 1500, won by one of the sport’s breakout stars, Genzebe Dibaba of Ethiopia, in 4:08 — more women from more countries can claim a legitimate shot at a medal.

That, actually, is one of the two big take-aways from these 2015 worlds: more athletes from more countries winning medals.

And, despite a disappointing medal performance by the U.S. team, the other: the emerging political influence internationally, concurrent with Coe’s presidency, of USA Track & Field.

Seb Coe, center, at Sunday’s news conference, with IAAF general secretary Essar Gabriel, left, and communications director Nick Davies, right

Despite the chronic backbiting within certain circles — sometimes, track and field comes off as the only major sport in the world in which its most passionate adherents seemingly find joy by being so self-destructive — the sport could well be poised for a new era in the United States.

That depends, of course, on a great many factors. But everything is lined up.

Next year’s Rio Games are in a favorable time zone.

USATF has, in the last three years, under the direction of chief executive Max Siegel, made significant revenue leaps.

Beyond that, Eugene, Oregon, last year played host to the World Juniors and a meeting of the IAAF’s ruling council; the 2016 world indoors will be staged in Portland, Oregon; the 2021 world championships back in Eugene.

The 2017 track championships will be in London; in 2019, in Doha, Qatar.

By comparison: the swim world championships have never been held in the United States. This summer’s FINA championships were held in Kazan, Russia; in 2017, the swim worlds will be in Budapest; in 2019, in Gwangju, South Korea.

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