The Weed Science Society of America (WSSA) was asked by the United States Department of Agriculture-Animal Plant Health Inspection Service (USDA-APHIS) to perform an analysis of the weed management implications associated with the potential deregulation and commercialization of glyphosate and glufosinate-resistant creeping bentgrass (Agrostis stolonifera L.) varieties. This analysis is needed to determine the current and potential significance of creeping bentgrass, and other species with which it can hybridize (several other Agrostis spp. and Polypogon spp.), as weeds in managed and non-managed ecosystems in the United States. The analysis deliberately focused exclusively on the weed management implications of the potential release of these creeping bentgrass varieties and did not attempt to assess other associated environmental and economic considerations. The Weed Science Society of America does not endorse or oppose the proposed deregulation of glyphosate- or glufosinate-creeping bentgrass. The information contained in this report does not represent a position for or against the technology and should not be interpreted as such. This work was done at the request of USDA/APHIS to provide science-based information for their use as a regulatory agency.