Montgomery (knee) is on track to rejoin the Diamondbacks' rotation early next week in Kansas City after completing a three-inning, 56-pitch simulated game Thursday, Nick Piecoro of The Arizona Republic reports.
Montgomery has been shelved since late June with right knee inflammation, but a return is right around the corner. He will skip a rehab assignment, with the Diamondbacks deeming a trio of simulated games enough to get the veteran left-hander ramped back up. Montgomery holds a disappointing 6.44 ERA in 13 starts for Arizona this season.