The finest summer formula when multiple diseases are cooking is by far:
Prodigy/Signature+Mancozeb 2+4 (oz/each)
These are the only 2 fungicides that synergize (sort of like herbicides do) in a way that bails out the turf manager of literally everything that could be wrong right now.
The cost is reasonable & the results are outstanding.
There are of course, other good approaches. What's everyone else like?