Have you tried Embroidery Library under alphabets. Not free however.
This is a freebie for numbers 0-9 VARSITY
You must join, sign in , and then come here and hit
the link. You can search the free embroidery forum
for tons of embroidery designs.
Do you have emb. software? Mine has fonts, and I think there is a block style font.
This COUNTDOWN design stitches out really nicely on jersey as it has a fairly low stitch density.
See if this fits the bill, Katiedo has a lot to choose from.
Jo