Jordan Moreau “The Flash” is racing ahead at the box office, picking up $9.7 million in previews at the box office. The Warner Bros. film, starring Ezra Miller as the DC Comics speedster and helmed by “It” director Andy Muschietti, has endured a long and rocky road to theaters, but it’s finally opening this weekend. “The Flash” is projected to earn around $70 million in its first weekend, with some predictions as high as $85 million and others as low as $68 million. That expected opening is in line with previous DC Studios projects like last year’s “Black Adam” and 2018’s “Aquaman,” which both debuted to $67 million — but Warner Bros. is surely hoping that “The Flash” takes more after his “Justice League” companion than Dwayne Johnson’s antihero. “Black Adam” stalled out with $168 million domestically and less than $400 million globally, while Jason Momoa’s “Aquaman” surfed to $335 million in North America and $1.14 billion worldwide. Without question, “The Flash” will perform better than March’s “Shazam: Fury of the Gods,” which opened with $30 million and ended its domestic run with just $57 million. In terms of Thursday previews, “Black Adam” collected $7.6 million, “Aquaman” had $9 million and “Shazam: Fury of the Gods” made $3.4 million.