Pearson continues strong pre-worlds form

Sally Pearson's preparations for the world championships have continued with a second place run in her 100m hurdles heat in Luzern.

Sally Pearson's preparations for next month's world championships have continued in Luzern. (AAP)

Sally Pearson has produced another solid run ahead of next month's world championship by placing second in the 100m hurdles at a meet in Luzern.

The Australian ran 12.83 seconds - 0.35 slower than her Diamond League run in London on the weekend - at the one-day Spitzen Leichtathtletik.

She finished behind American Sharika Nelvis, who ran 12.67.

Tuesday's run continues a return to form for London 2012 Olympic gold medallist Pearson.

The 30-year-old produced her best time in half-a-decade on Sunday after years of injuries when she was second to American world record-holder Kendra Harrison (12.39).

On a positive day for Australians in Luzern, Michelle Jenneke placed third in her 100m hurdles heat in a time of 13.44.

Morgan Mitchell blitzed her 400m race with a time of 52.21, beating second-placed Agne Serksniene of Lithuania by 0.88.

Also in the 400m, Rio Olympian Lauren Wells opened her international season with a 56.32 to finish fourth.

Javelin thrower Kathryn Mitchell recorded her fifth podium from seven starts this year, placing second with a best throw of 61.44m.

The Luzern event serves as a warm-up to the IAAF world championships on August 4-13 in London.