Damn Yankees! outdoors on a baseball diamond could have been a natural, but this? Credit Tulsa Opera with cooking up a way to open the season live and on time to a socially distanced audience 14% larger than a full house in the company’s usual theater. The lecherous Duke of Mantua (Joshua Weeker), his vicious court jester Rigoletto (Todd Thomas), the virginal daughter Rigoletto idolizes (Oklahoma native Sarah Coburn), and the rest of the cast will take up far-flung positions on the field, dispatching Verdi’s melodious tragedy in an intermissionless 90 minutes, thriftily accompanied by a piano plus string quintet. —M.G.