One day after announcing he was stepping away from baseball, Yermin Mercedes was back with the Chicago White Sox's Triple-A affiliate Thursday.

The White Sox confirmed Thursday that Mercedes was in uniform for the Charlotte Knights' 5-3 loss to the Durham Bulls.

Mercedes apologized in an Instagram post.

"I'm never going to give up," he wrote. "I spent 10 years in the minor league and I have always understood that this is a big and long process but the talent that I have shown speaks for itself. With the greatest humility and speaking from the heart ... my dream is to be an established player in the major leagues. I asked God to give me that opportunity and I've got it 3 months ago. I owe myself to my family, my organization and my fans. I asked again for forgiveness if I have failed them.

"Baseball is in my blood ... and I thank God for guiding me to the right path and to make the correct decision. To those going to a similar situation, forget the criticisms and bad comments. They will always exist to trample on your personality. God bless y'all.

"I love everyone. I'm back."