Aussie sprinter Rohan Browning eliminated in 100m semifinals

Rising sprint star Rohan Browning insists the best is yet to come after coming up just short in his bid to become the first Australian man in 65 years to contest an Olympic 100m final.

The 23-year-old Sydneysider was left to rue a slow start after finishing fifth in 10.09 seconds in his semi-final on Sunday evening in Tokyo.

Only 24 hours earlier Browning had improved to second on the Australian all-time list by winning his opening-round heat in 10.01, raising hopes he could join countryman Patrick Johnson as the only members of the exclusive sub-10 second club.

"I just never got out and then I had my work cut out for me," Browning told the Seven Network.

"I feel like I came back well through the end of the race but I left myself with too much work to do and it is only 100 metres.

"I've been consistent this year, and I've been knocking on the door of sub-10, a big breakthrough.

"Hopefully it comes later in the year in Europe.

"I'll definitely walk away from this experience with a lot learned."

British sprinter Zharnel Hughes won the semi involving Browning in 9.98, while China's Su Bingtian led all qualifiers for Sunday night's final in 9.83.

Despite the understandable initial disappointment from Browning, it was still a huge step forward on the global stage.

"I feel like this season I've had all the component parts of the race - it has been about putting it together in one run and it is coming," he said.

"But that's part of figuring out the event and racing at this championship level.

"In 2019 (in Doha) I ran basically dead last in my heat at the world championships, so I'm heading in the right direction."

The last Australian man to contest an Olympic 100m final was Hec Hogan, who won bronze in the 1956 Melbourne Games.