Wiktionary
vb. (context slang English) To attack; to assault; to abuse.
WordNet
Usage examples of "pitch into".
He turns Matt Noyes's first pitch into a grand-slam home run, and after an inning and a half the score is Bangor West 6, Lewiston 1.
Also the name given to the Wellenen who rode with Vidron to the Boskydells, to Gunarring Gap, and to Gruwen Pass, (the) Vorvor (Chakur: wheel): a whirlpool on the edge of the Pitch into which First Durek was cast by Squam.
The whining from the crystal rose in pitch into a piercing shriek, and then into a frequency so high that while Alucius could not hear it, he felt as though his very bones were being sawed apart from within, that his entire being was being sliced into slivers by invisible knives.
However, before Kerry Ann could reply, the pinch-hitter rifled Vlobski's first pitch into the gap in left and slid into second so hard the Belgorvian second base-machine tumbled on its titanium buttski as Hornsby barreled in spikes high.