Yasiel Puig has been informed that his custom spikes are no longer allowed by Major League Baseball.

Puig received a letter from MLB stating that he will be subject to a fine if he wears customized Nike shoes on the field again. The fine could be as much as $5,000.

The Los Angeles Dodgers outfielder first wore shoes with an American flag theme on the Fourth of July and later wore shoes, designed by a local artist, with a Cuban flag theme.