TOKYO (AP) — In the 16 years since Usain Bolt posted his world records in the 100 and 200 meters, nobody has really come close to toppling them.

One of track’s all-time greats and maybe still its most-recognizable star said he looks at today’s top sprinters and doesn’t expect that to change anytime soon.

“I’m not worried,” Bolt said at a Puma event on Thursday, two days before the start of world championships that will be the first he has attended in person since he retired from competition eight years ago.

Bolt set both records — 9.58 in the 100 and 19.19 in the 200 — at worlds in Berlin in 2009.

Since then, only one other runner, Yohan Blake, has cracked 9.7 in the 100, and only Blake has run faster than 19.3 in the 200.

American Noah Lyles is the only sprinter to be outspoken about

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