Ben Zobrist keeps wearing his black spikes, despite a warning from Major League Baseball:

Ben Zobrist was joined by Chicago Cubs teammates Kyle Schwarber and Steve Cishek in wearing black spikes on Monday despite a warning from Major League Baseball that he was in violation of the sport’s uniform regulations.

Zobrist posted a letter from MLB on Instagram on Saturday that cited him for violating regulations requiring at least 51 percent of the exterior of a player’s shoes be the club’s designated primary shoe color. For the Cubs, that color is blue.

The letter said Zobrist will be subject to discipline, including a fine, if he continued to wear non-compliant shoes.

Zobrist wants to talk this through with Joe Torre. Torre tends to be a tough but reasonable person, so we’ll see what comes of this.