in there pitching
Making a lot of effort towards some purpose or goal. Even though she's in there pitching, I don't think she'll be able to get more than a B this semester.
in there pitching
Fig. trying very hard. Bob is always in there pitching. Just stay in there pitching. You'll make some progress eventually.
in there pitching
Exerting one's best effort, trying actively. For example, After the flood, everyone was in there pitching to clean up the streets. This metaphor alludes to the pitcher's important role in baseball. [Colloquial; c. 1940]