Montas will start Tuesday's game against the Dodgers, John Hickey of SI.com reports.
The 27-year-old was reinstated from the paternity list Friday and will rejoin the rotation in the series opener against the Dodgers. Montas has a 5.86 ERA, 1.53 WHIP and 44:20 K:BB through 43 innings and will have a tough matchup against a Los Angeles offense that leads the league in homers (100) and total runs (309).