Zumaya says he thought his career was over immediately after throwing his final pitch Monday night. He says it felt like his elbow exploded.
The Tigers say the diagnosis is "the best bad news you can get." The fracture will take about four months to heal, but there is no ligament damage in the elbow.
The hard-throwing Zumaya fractured his right olecranon, which is the bony tip of the elbow right under the skin, the Tigers said.