Orioles prospect Coby Mayo broke a rib at Triple-A Norfolk. Now it’s time to wait.

NORFOLK, Va. — Coby Mayo is faced with a harsh new reality and a stern test of his patience.

There is simply no rehabbing a broken rib.

Mayo, a Norfolk Tides infielder and one of the Baltimore Orioles’ most highly regarded prospects, fractured a rib Thursday when he tumbled down Harbor Park’s third base dugout steps and landed on a railing while chasing a foul ball.

Mayo, 22, was placed on Norfolk’s injured list a day later, with an announcement from the Orioles that “he will...