NBA, season by season.

A friendly cartoon Celtics mascot character playing with a basketball, energetic and cheerful, original fan illustration inspired by the Boston Celtics (not the official logo or mascot), single subject only, strict black and white line art, bold clean outlines only, pure white background, kids coloring book page style. Absolutely no shading, no grayscale, no gradients, no color fills, no text anywhere in the image