The sexy tennis drama “ Challengers” won the box office this weekend with $15 million in ticket sales. Zendaya and castmates Mike Faist and Josh O’Connor have been on a globetrotting press tour to get the word out about Italian director Luca Guadagnino’s original film. “Challengers” accounted for around 26% of the overall box office with the re-release of “Dune: Part Two” in IMAX, which