New Zealand coach John Wright concedes he faces an uphill battle to get Jesse Ryder into shape for international cricket for any length of time after the batsman was injured again.
Ryder sustained a grade two right calf strain while innocuously jogging in the outfield during a domestic match, a similar problem to the one he suffered earlier in the year on his left side.
The 27-year-old has a long history of weight and fitness problems. In the build-up to New Zealand's tour to Zimbabwe in November, Ryder was told to meet certain fitness criteria in order to be selected. He was able to reach the targets only to suffer the calf strain prior to the tour.
"We've worked hard with him, but obviously there's an issue there and we've got to get to the bottom of it," Wright told The Dominion Post.
"We want to work with Jesse and get him fit and get him right. We'll work out in the next few days how long that's going to take."
Ryder is expected to be sidelined for a month, making him a doubt for the Black Caps' upcoming Test against Zimbabwe which starts on January 26.