 Ludgin's other roles with the SFO included Amonasro in "Aida" (with Ella Lee in the title role and Jon Vickers as Radames), Barnaba in "La Gioconda" (with Leyla Gencer), Baron Jaroslav Prus in "The Makropoulos Case", Boris Timofeyevich Ismailov in "Lady Macbeth of Mtsensk" (opposite Anja Silja), Dikoy in "Káťa Kabanová" (with Elisabeth Söderström in the title role), Don Fernando in "Fidelio" (with Birgit Nilsson as Leonore), Friedrich von Telramund in "Lohengrin" (with Hildegard Hillebrecht as Elsa), Fritz Kothner in "Die Meistersinger von Nürnberg" (with Claramae Turner as Eva), the Grand Inquisiteur in "Don Carlos" (with Marilyn Horne as Princess Eboli), Iago in "Otello" (with James McCracken in the title role and Pilar Lorengar as Desdemona), Jack Rance in "La fanciulla del West" (with Marie Collier as Minnie), John Proctor to the Elizabeth Proctor of Frances Bible, Krushina in "The Bartered Bride" (with Mary Costa as Marenka), Kurwenal in "Tristan und Isolde" (with Irene Dalis as Isolde), the Music Master in "Ariadne auf Naxos" (with Reri Grist as Zerbinetta and Jess Thomas as Bacchus), Rodrigo in "Lulu" (with Evelyn Lear in the title role), Scarpia (with Giulia Barrera as Tosca and Enrico di Giuseppe as Mario Cavaradossi), Sharpless in "Madama Butterfly" (with Teresa Stratas as Cio-Cio-San), Valentine in "Faust" (with Richard Verreau in the title role and Arnold Voketaitis as Mephistophélès), Von Faninal in "Der Rosenkavalier" (with Elisabeth Schwarzkopf and Leonie Rysanek as the Marschallin) and the title roles in "Boris Godunov" (with Richard Cassilly as Grigori and Ramón Vinay as Varlaam), "Macbeth" (with Grace Bumbry as Lady Macbeth), and "Rigoletto" (with Doris Yarick as Gilda).In 1982, Ludgin appeared at Carnegie Hall, in a concert version of Tchaikovsky's "Iolanta", with Galina Vishnevskaya and Nicolai Gedda.In 1983, the singing-actor capped his career with the last of his twelve world premieres, as Old Sam in Leonard Bernstein's "A Quiet Place" (1983).