Taiwo Ogunleye, in his article, Procurement Governance: A Statutory Chain Analysis of Planning, Evaluation and Approval under the Nigerian Public Procurement Act, evaluates the statutory chain model of public procurement governance under the Public Procurement Act 2007, as amended by the Finance Act 2020. Ogunleye contends that the legality of a procurement is not determined at a single decision point but emerges cumulatively through a structured sequence of legally mandated stages: planning, accountability, competition and evaluation, threshold allocation, and institutional approval. By analysing the interaction between sections 20, 21, 23-33, 17 and 22 of the Public Procurement Act, Ogunleye shows that each stage performs a distinct regulatory function and imposes legally binding constraints on subsequent decision-making. Ogunleye further situates this statutory architecture within broader administrative law and regulatory governance theory and argues that defects at any stage of the chain may invalidate procurement outcomes, regardless of formal compliance at the approval stage.