Cubs Pitcher Marcus Stroman Suffers Rib Cartilage Fracture, Puts Playoff Hopes in Jeopardy

Stroman was already on IL for right hip inflammation when rib injury occurred during bullpen session.
No timetable set for Stroman's return due to unusual nature of injury.
Cubs unsure when Stroman will be symptom-free and able to resume activities.
Javier Assad and Drew Smyly to fill in for Stroman in rotation.
Injury comes at crucial time with Cubs currently holding an NL wild card spot.