Pirates' Chase De Jong: Undergoes season-ending surgery

De Jong underwent surgery on the cartilage in his left knee Tuesday, Kevin Gorman of TribLive.com reports.

De Jong was sent for an MRI last week after he was placed on the 10-day IL with left knee inflammation, and he'll face a five-month recovery timetable following his procedure. The right-hander made a career-high nine starts in the majors this year and recorded a 5.77 ERA and 1.56 WHIP in 43.2 innings. De Jong will now shift his attention toward getting ready for spring training in 2022.