Maxim Aksenov has withdrawn from the upcoming San Francisco Opera production of Carmen "for personal reasons." Brian Jagde replaces him in four performances, Adam Diegel in one. This means Jagde is singing Don José in 10 of the 11 performances. This is director Calixto Bieito's US opera debut; the production is being staged in SF by Joan Anton Rechi.
Note that there's a free simulcast to the ball park on July 2.