(CBS) As the Cubs have continued their strong play by moving to a season-high 20 games over .500 after completing a four-game sweep of the Braves on Sunday, first baseman Anthony Rizzo has been a consistent force in the middle of Chicago’s resurgence.

The team’s clubhouse leader, Rizzo is hitting .290 with 25 homers (sixth in NL), 76 RBIs (fifth), a .400 on-base percentage (fourth) and .938 OPS (fourth). And his continued stellar play now has him garnering some outside attention for the NL MVP award.

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You can count CBSSports.com MLB insider Jon Heyman among those who supports Rizzo being a top candidate. Heyman believes Washington’s Bryce Harper and Arizona’s Paul Goldschmidt have had superior individual seasons, but if you value team wins to a large degree, Rizzo can be a dark-horse candidate.

“National League, it’s a little more wide open,” Heyman said. “Harper and Goldschmidt’s teams aren’t in (the playoffs) right now. They’re both around .500. We’ll see what happens to them. I do think that affects the voting, as it should, because it’s Most Valuable Player. It’s not best player. That’s the way it’s always been. There’s been a long history and precedent for voting for a guy whose team is at least in contention or preferable wins (big). That being said, I think you’ve got Rizzo, you’ve got (Andrew) McCutchen. There’s probably one or two others in the mix.

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“It’s hard to pick a winner probably among five or six guys. If I was voting today, I’d probably lean to Harper even though I downgrade significantly for the fact that the Nationals are a major disappointment. I do think Rizzo is a bona fide candidate, though, and could win.”

Listen to Heyman’s full interview below.

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