The phrase "assortment of pitches" is correct and usable in written English.
It can be used when referring to a variety of musical notes or tones, or in a broader context of different proposals or ideas.
Example: "The composer presented an assortment of pitches that created a rich and complex harmony."
Alternatives: "variety of tones" or "range of notes".
"He's got an excellent assortment of pitches, and he had all his pitches working".
Karstens is a finesse pitcher, relying on control of his average assortment of pitches.
Jones does not throw hard, and his assortment of pitches is considered below average.
As recently as two seasons ago, Scherzer was considered a talented but underachieving player, given his electrifying assortment of pitches.
"His fastball was moving downhill," said Posada, who likened Contreras's assortment of pitches to those of Roger Clemens.
The Mets believe Jones has an above-average assortment of pitches, and they know that if they teach him something new, he will listen.
But in the years that followed, those initial rules did not keep Chamberlain from succumbing to an assortment of pitching injuries.
Some great pitchers, like Whitey Ford and Spahn, never had an Unfair pitch but an assortment of excellent pitches instead.
Tomlin had the Blue Jays off-balance and guessing with an assortment of breaking pitches – nothing harder than 75mph – before Toronto finally pushed across its first run of the series to tie it 1-1 in the third.
Florida starter Mark Redman had left after five innings and reliever Michael Tejera had handled the Mets in the sixth with an assortment of breaking pitches mixed with high, hard fastballs.
I was a little bit sad for that". Right-handed, cups his glove up to his nose when getting the sign from the catcher, throws from numerous angles, throws a wide assortment of breaking pitches, mixes speeds and has that high, peekaboo kick in his motion which, at the last moment, gives a sudden jerk, as though he has been bitten by a bee in the buttock.
