When the hidden ball trick works in baseball, it's kind of great, but when it doesn't work, everyone just stands around a bit awkwardly until the first baseman gives up and throws the ball back to the pitcher. The only thing you really risk is a bit of embarrassment.
In football, though? You could fumble the ball, or get tackled for a huge loss, or any number of things that would cause your coach to throw a fit. Which is why this trick, from Concord High School in California, is so impressive:
They totally fooled just about every defender on the field.