CHICAGO — Kyle Harrison was never himself during spring training, tasked with recovering from both a nagging shoulder injury and an illness-induced weight loss. A month into the season, Harrison is back up with the Giants. As a reliever.

The San Francisco Giants recalled left-hander Kyle Harrison on Monday, in advance of a three-game road series against the Chicago Cubs, while right-hander Lou Trivino was designated for assignment.

Kyle Harrison, who at times looked as if he might be a forgotten man in the upper reaches of the San Francisco Giants’ system, is back. He’s in the bullpen, not starting, but Harrison said Monday at Wrigley Field he’s just glad his velocity is back and the results are there;