The Italian was set to make his first appearance in an outdoor event this year after a “winter of intense preparation” having withdrawn from last year’s World Championships before the semi-finals due to a thigh injury.
“I am forced to skip the debut 100 meters and the first face off with Kerley in Rabat, which I was really looking forward to, due to a lumbo sacral nerve block that I’m working on resolving in the short term,” Jacobs said in a statement on Thursday.
“It’s the result of a misstep and not an injury, which does, however, keep me from competing in Morocco.”
The 28-year-old said he was still in strong physical shape and ready for a great outdoor season.