Even after saying Sunday that Javy Baez should be promoted to the majors ‘‘soon,’’ shortstop Starlin Castro was as surprised as anyone else that the Cubs did it Monday.

‘‘I said, ‘Wow, I said something and he comes up right away,’ ’’ Castro said.

So who does Castro-damus say is coming next?

‘‘Soler?’’ he said with a smile, referring to touted outfield prospect Jorge Soler. ‘‘We have to bring him, too. And [Kris] Bryant.

‘‘I think you bring those guys right now, and next year we’ll have a really good young team and we can prove it. We’ve got players that can play at this level. . . . And when those guys are ready, I think we’ll be a team that can compete with any team.’’

This was the power of Javy Baez in the clubhouse Tuesday — a power of hope that seemed as big as the power he generated with a first-pitch, 414-foot, opposite-field homer in the 12th that beat the Colorado Rockies 6-5 in his big-league debut.

It’s the power of suggestion of what’s to come.

‘‘It should make people in the minors hungrier, and even us hungrier to get these guys up here,’’ first baseman Anthony Rizzo said of Baez’s promotion, which might be even more heralded than Rizzo’s two years ago. ‘‘With Javy, he could spark us. That’s a lot of home runs he could provide if he gets in a groove.’’

Realistically, the Cubs don’t expect much more of Baseball America’s seventh-ranked prospect than the kind of ups and downs they saw throughout his 1-for-6, three-strikeout debut Tuesday.