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The cover of the 1950 yearbook is a dramatic shift in style from previous editions, and while it may seem a little boring at first, it's actually an impressive piece of modernist art that was well ahead of its time.
First, the pitcher's mechanics are nearly dead-on, which is rare in a baseball illustration (you could argue that the seams of the ball wouldn't really spin that way, but you're forgetting about the knuckleball). Second, the textured blue background is tastefully done. And third, the concept of having the ball flying at the viewer is quite innovative. No camera in the world could have captured this kind of real-life image in 1950; shutter speeds simply weren't fast enough. The artist, then (whom we know nothing about other than the "Shepard" tag at the bottom right corner of the drawing) was working entirely from his or her imagination, and not from an actual still-shot.
Whoever "Shepard" was, we raise a toast to her/him/it, and encourage you to click the link for the rest of the 1950 program.