In this issue of Bone Marrow Transplantation, Kurita et al.1 describe the results of a prospective phase I/II trial of intra-bone single unit cord blood transplant (IB-CBT) in 15 patients with hematologic malignancies. Clinical outcomes were compared with 150 matched pair historic controls that received intravenous cord blood transplants (IV-CBT). Although time to neutrophil engraftment was similar between cohorts, platelet recovery occurred significantly earlier in the IB-CBT group. Other outcomes such as non-relapse mortality, relapse, survival and GvHD incidence were similar.