With what might be the quietest 63 in major championship history, Robert Streb went leaping up the leaderboard into a tie for the lead after Friday’s second round of the PGA Championship. Henrik Stenson, the Open Championship, said after his second straight 67, “I think a 63 on Sunday would work pretty well here, too.” It didn’t work too badly on Friday for Streb, who became the 28th player to shoot 63 in a major championship. No one has shot lower.