When it comes to desire, passion and lustfulness, Luca Guadagnino is an expert at capturing it — the excitement, the thrill and even the shame of it all. He has proven himself capable of seducing the audience through his depictions of sensible and, at times, out of the box erotisms. It’s no surprise then when Guadadino and novelist-playwright Justin Kuritzkes take tennis, one of the most erotic sports, and craft a restlessly sexy, infuriating film in “Challengers.” Since its release April 26, “Challengers” has become No.1 in the box office with a domestic gross of $15 million.