Kiwi Nick Willis is in a race against time to be fit for the Commonwealth Games in April.
Willis was among the 15 track and field athletes that were announced last week for the games in the Gold Coast.
However, the two-time Olympic medalist revealed that he has developed a stress reaction in his fibula, which will put his Commonwealth Games in doubt.
Willis said he will be taking a few weeks off to make sure he is fit for the Gold Coast.
"Sad to withdraw from the [NB Indoor Grand Prix] this weekend as I have developed a stress reaction in my fibular [sic]," Willis said on Twitter.