The paper introduces open graph benchmark, a collection of 15 datasets, as well as software for reproducible benchmarking. Three knowledgeable reviewers support acceptance for the contributions of the paper, and I also recommend to accept for NeurIPS 2020. However, I encourage the authors to address the concerns raised by the reviewers in the final version, in particular to reword the claims of the paper as mentioned by Reviewers #4 and #5.