CHICAGO (AP) — Welington Castillo said everything he wanted to say with one big swing.

Castillo atoned for an error with a two-run homer in the eighth inning, and the Chicago White Sox rallied to beat the Kansas City Royals 5-4 on Monday night.

Castillo’s poor throw on Billy Hamilton’s steal in the seventh helped set up Whit Merrifield’s tiebreaking sacrifice fly. But Castillo came up big after Tim Anderson led off the eighth with a double against Brad Boxberger (0-3), sending an opposite-field drive to right.

“Great moment for him and even better moment for the team,” Anderson said.

It was Castillo’s first homer since he was suspended last May for 80 games by Major League Baseball following a positive test for a performance-enhancing substance. He was just 2 for 27 before his first extra-base hit of the season.

Castillo left the clubhouse without talking to the media, but manager Rick Renteria praised the veteran catcher for his work with Ervin Santana and the clutch homer at the end.

“The guys just kept chipping away,” Renteria said.

Kansas City dropped to 4-3 this season when leading after seven innings. It has lost six of its seven one-run games.