After running a massive personal best 60m time indoors and starting her outdoor season with a couple of 400m races, Tokyo Olympics 100m bronze medallist Shericka Jackson has confirmed that she is leaning towards the 100/200m double again this season.

Jackson, 27, a World Championships and Olympics 400m bronze medallist experienced a successful step down to the blue ribbon sprint last season, running personal bests of 10.76 and 21.81 in the 100m and 200m, respectively. The times, along with her 49.47 personal best in the 400m, have made her the second best active combination sprinter and fifth all-time.

Only Marita Koch, Marion Jones, Florence Griffith-Joyner, who no longer compete and Bahamian wonder girl Shaunae Miller-Uibo rank ahead of her.

Jackson missed out on a possible Olympic medal in the 200m in Tokyo last year when she mistimed her run during the preliminary round and failed to advance. However, she will have a second crack at a global 200m medal at the World Championships in Oregon this summer, should all go well at the National Championships in Kingston next month.

“I am definitely doubling this year,” Jackson said after running 11-flat in her first 100m final this season at the JAAA/SDF Jubilee meet last weekend. The time was run into a headwind of -1.8m/s, which makes her time about 10.87 without the influence of the wind.

“I think coach and I will lean more to the 1-2 than the 400 but we will see come trials.”

Jackson, who will be competing against a stacked 200m field that includes Tokyo Olympic bronze medallist Gabby Thomas and British star Dina Asher-Smith at the Doha Diamond League meeting on Friday, believes running a personal best indoors has helped her become a better sprinter.

“It has helped me good. I am coming from a 7.31 to a 7004, it was a really good accomplishment and I am healthy and I’m ready,” she said.