Groth, who climbed five spots in the latest ATP singles update, said yesterday he felt his best tennis was still ahead of him at 27 years of age.

“I definitely believe I can go higher,” Groth said.

“I feel like I’m starting to establish myself now on the ATP tour in both singles and doubles.

“Hopefully, I can use this ranking to springboard me into next year.

“It’s been a great couple of years and when this season is done, I will take a chance to reflect a little but, for now, there is a couple of weeks left.

“I’m certainly not ready to stop working and be happy with being 82.

“I’m going to keep pushing to get as high up the rankings as I can.”

Groth, who has earned about $500,000 this year, has enjoyed a breakout season with the big-server playing for Australia in the Davis Cup in Perth last month.

He beat Uzbekistan’s Temur Ismailov 6-3 6-2 in his singles rubber to give his nation a 4-0 lead.

Groth also qualified for the main draw at Wimbledon and lost to Roger Federer in the second round of the US Open.

“Everything is going well,” he said.

“I’m playing a challenger in the US that starts tomorrow.

“I will play here and then two more weeks here before I finish the year.

“Once I’m done, I will head back to Australia to prepare for the Australian summer and 2015.”

Groth broke into the top 100 in August.

Veteran Lleyton Hewitt is the top-ranked Australian at 49, with Nick Kyrgios (53), Bernard Tomic (56) and Marinko Matosevic (78) behind him.