Cubs call up .784 OPS infield prospect before Pirates series

The Chicago Cubs have called up a highly regarded infield prospect, who carries an impressive .784 OPS in the minor leagues, ahead of their upcoming series against the Pittsburgh Pirates. The move adds a top prospect to the Cubs' active roster, signaling the team's intent to bolster their lineup. Specific details about the prospect's name and the exact date of the call-up were not provided in the excerpt.