If the United States is going to win the most gold medals three years from now at the LA Olympics, there’s a good chance the U.S. track relay teams will play a big part in that.

If this year’s world championships are any sign of what’s to come, then give the U.S. a better-than-average chance.

USA Track and Field overhauled its struggling relay strategy to start this Olympic cycle and won four of five possible gold medals at the world championships in Tokyo last month. Anchors in three of the wins were Sha’Carri Richardson, Noah Lyles and Sydney McLaughlin-Levrone.

It marked only the second time over the past 10 years that both the men’s and women’s 4×100 teams won gold at the same major championship — worlds or Olympics.

“We always have great talent, but do we have the culture in place

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