CC Sabathia’s balky right knee is at it again.

The Yankees lefty exited Friday’s game against the Athletics after three innings because of knee discomfort, the team announced. No additional tests were scheduled.

The start was Sabathia’s third after his third injured-list stint of the year, two of which have been for right knee inflammation. The 39-year-old has had multiple surgeries on the knee and had it drained earlier this season.

Sabathia had given up six runs in seven innings across his first two starts back from the IL, but was looking better Friday night before departing. The only run he gave up against the Athletics came on Jurickson Profar’s solo home run in the second inning.

TV replays showed Sabathia looking to be in discomfort after a pitch in the third inning. Luis Cessa replaced him to start the fourth.