Bills, Sabres name Pete Guelli as Chief Operating OfficerSource: WGRZ-TV ‘On Tuesday, each team jointly announced that Pete Guelli has been hired as the Chief Operating Officer of both organizations.’ Related posts: Sabres name Pete Guelli Chief Operating Officer Sabres, PSE name John Roth Chief Operating Officer John Roth named Chief Operating Officer of Pegula Sports & Entertainment and Buffalo Sabres Sabres have new Chief Operating Officer Everything on the table as Pegulas weigh Bills, Sabres stadium options