Usain Bolt says he is over his early season setbacks and running into form at the right time to sign off his career with two more gold medals at next month's world athletics championships in London.
Bolt laboured to a 10.06 seconds 100 metres victory in the Czech Republic last month and immediately travelled to see his doctor German Hans-Wilhelm Mueller- Wohlfahrt for some treatment on the back issues that have troubled him for years.
The Jamaican world record holder will test his treated back in Friday's Diamond League meeting in Monaco, which will be his last outing before he defends his 100m title and then goes in the 4x100m relay in the world championships.
"I'm feeling good," Bolt told a Monaco news conference.
"The season started off slow for me, I had a setback after my friend Germaine passed away, it kind of set me back a little bit.
"I had some work to do so I've been a little behind schedule but I'm training well, but I'm feeling much better over the last couple of days because I went to see my doctor in Germany and I've been training good, so that's a good sign, the weather's great here so hopefully on Friday it will be the same and I can perform at my best," Bolt said.
Bolt is unlikely to ever again match his best - the 2009 world record of 9.58 - and the 30-year-old said he would be happy with any sub-10 second time as he seeks to find the speed he knows he will need on August 5.
"It's just all about execution now, going out there trying not worry too much about time," he said.
"It would be good to dip under 10 seconds which will always help everyone's confidence."