Bolt winning race against time

MONACO - 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 labored to a 10.06 winning time in the 100m in the Czech Republic last month and immediately traveled to see his doctor, Hans-Wilhelm Mueller-Wohlfahrt, for 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 meet in Monaco, which will be his last outing before he defends his 100m title and then runs in the 4x100m relay at the world championships.