'Deadpool' and 'Alien' top box office charts again; 'Blink Twice' sees quiet opening

Ryan Reynolds as Deadpool/Wade Wilson, left, and Hugh Jackman as Wolverine/Logan are shown in a scene from "Deadpool & Wolverine." (20th Century Studios/Marvel Studios via AP)

In a sleepy summer weekend at the box office, holdovers reigned supreme as newcomers landed without a splash.