Double Olympic champion Elaine Thompson-Herah admits she is yet to find her best form after being hampered by some early-season injury setbacks.

The Jamaican sprinter is set to face her most formidable challenge to date this term, at Thursday’s Diamond League meet in Rome. Thompson-Herah will face a quality field that includes 400m Olympic champion Shaunae Miller-Uibo, 200m World champion Dina Asher-Smith and compatriot Shericka Jackson over 200m.

In nine races so far this season, over both the 100 and the 200m, Thompson-Herah is yet to taste defeat.  She will be first to admit, however,  that it has been far from smooth sailing.

“I’m not 100 percent but I think I am a true fighter. I opened my season at Mt. SAC and I got a rotator (cuff) injury so I was in and out of practice.  You need your arms to run and every time I race I have discomfort in it, but I have to race, I have to see where I am at,” Thompson-Herah said at the pre-meet press conference on Wednesday.

“I think having (to compete) with an Achilles and shoulder injury you are a true fighter.  I know most athletes have something that they're going through they just don’t talk about it.  I hate to talk about my injuries,” she added.

With Jamaica’s national trials just a few weeks away, the athlete insists she is using the races to fine-tune her performance.