DeJesus has hit third in 126 games in his career and has a .292 batting average there. He did so in 23 games last year with the Royals, batting .193 (17-for-88).
"Dale wants me to stay with the same plan, nothing new, and go out there and have good at-bats," DeJesus said. "That's how I'm going to take it. I'm not going to be this power guy all of a sudden. I'm just going to get my at-bats today and see what happens."
The outfielder's steady approach convinced Sveum to make the move.
"[DeJesus] said, 'I always hit the same. I've hit there before, and I've hit all over the place,'" Sveum said. "That's one reason I'm comfortable doing that is that he just has a [good] at-bat all the time, no matter where he hits in the lineup."
DeJesus has been one of the Cubs' most consistent hitters in recent weeks and was 11-for-33 in his last 10 games entering Saturday. He may not provide much pop but he can deliver doubles and triples. Joe Mather was 6-for-27 (.222) so far in the No. 3 spot.
Sveum also made the switch because Ian Stewart was not available because of a sore left wrist, which flared up again. The third baseman was available to pinch-hit Saturday and most likely would not start again until Monday.
Sveum said he came up with Saturday's lineup "after hours and hours of debating." The Cubs want Tony Campana at the top to take advantage of his speed, so he led off against the Giants.
"The way our lineup is, it's not going to be an everyday thing," Sveum said of having DeJesus hit third. "When Stewart comes back, we might change some things around a little bit."
DeJesus entered the game with one home run this season. He doubled his total by clubbing a solo shot in the fourth inning, the possibility of which he downplayed before the game.
"If it happens, yes, I'll take it," DeJesus said, laughing. "I'm not going to shy away from that. But that's not my game."