SAINT-DENIS, France >> A runaway win in one relay and another that was oh-so-close.

Sydney McLaughlin-Levrone and Gabby Thomas brought the curtain down on track by romping to a win in the women’s 4x400 relay Saturday for America’s 34th overall medal at the track and 14th gold.

The winning time: 3 minutes, 15.27 seconds.

In another race involving a different sort of .1-second margin, American hurdle gold medalist Rai Benjamin edged out 200-meter champion Letsile Tebogo of Botswana in the men’s relay.

Fittingly, the final day of a track meet full of close calls and surprises featured two more races decided by .01 seconds — an 800-meter win by Kenya’s Emmanuel Wanyonyi and a 100-meter hurdles victory for American Masai Russell.

Russell wins hurdles in photo finish >> In the hurdles, Masia Russell beat Cyrena Samba-Mayela, whose silver medal marks the first of any color for France at the Olympic track meet.

In a close-as-can-be race down the straightaway, Russell finished in 12.33 seconds but had to wait 15 seconds to learn she had beaten the Frenchwoman by .01.

Lin Yu-ting wins boxing gold >> Boxer Lin Yu-ting of Taiwan won a gold medal in the women’s featherweight division, following Imane Khelif’s lead a day earlier with a glittering response to the intense scrutiny faced by both fighters inside the ring and around the world over misconceptions about their womanhood.

Lin beat Julia Szeremeta of Poland 5:0 in the final at Roland Garros.

Ko’s gold puts her in LPGA Hall of Fame >> Lydia Ko completed her Olympic medal collection with the most valuable of them all, a gold medal that puts the 27-year-old Kiwi into the LPGA Hall of Fame.

Ko made a 7-foot birdie putt for a 1-under 71 and a two-shot victory.