World champion Amantle Montsho takes the 400m in the Stade de France (Jean-Pierre Durand) © Copyright
Richards-Ross has run 49.28 this summer and has won eight of her last nine races including the World Indoor Championships in Istanbul. She won gold at the World Championships in Berlin 2009 and she's hoping to add Olympic gold to her CV this August.
DN Galan is a popular event for a lot of world class athletes, Richards-Ross among them.
"I love the overall experience at the DN Galan. The meet is very well organized, the fans are energetic, and there is always great competition."
But it won't be easy for either to win the race or the diamond on offer for a stadium record. The stadium record is 49.70 (Allison Felix, DN Galan 2007) and Richards-Ross is up against Botswana's Montsho who won gold at the most recent World Championships in Daegu last year. Her personal best is 49.54 from the African Championships last month.
The crowd in Stockholm will of course be backing their local hero and Swedish record-holder Moa Hjelmer. Whatever happens, it's going to be a key race to watch at the Stockholm meet.
Organisers for the IAAF