With the off day on Monday, they won't need a 6th starter until 7/23. Then with the off day on 7/27, they won't need one until 8/2 and then maybe 8/6. But with off days on 8/10, 8/14, 8/21, and 8/24, they shouldn't need a 6th starter until the end of August. Burnes can suck it up and pitch on 4 days rest on 8/20; he won't need to pitch again until 8/27.