Yadier Molina has been playing the Cubs for a decade and a half.

For 15 years, Molina has been one of the faces of the St. Louis Cardinals, making nine All-Star Games, winning eight Gold Gloves, playing in nine postseasons and winning a pair of World Series championships. And for much of that time, his Cardinals had the upper hand in the rivalry between the two National League Central foes.

But that's changed in recent years. The Cubs have ascended to the Cardinals' old spot as a perennial contender, and it was their defeat of the Cardinals in the NLDS back in 2015 that really seemed to usher in the current era of World Series expectations on the North Side.

If you watch any rivalry long enough, you'll see the balance of power shift back and forth. Molina has been watching this rivalry for a long time.

"They've got good chemistry, they've got good talent there, they play together," Molina said Tuesday in Washington, D.C., before suiting up alongside Willson Contreras and Javy Baez on the NL All-Star team. "So yeah, they remind me of what we were back in the day with the Cardinals."

High praise considering all that Molina and those old Cardinals teams accomplished.

It wasn't too long ago that the Cardinals were a dominant force in this division and in this rivalry. Between 2009 and 2015, the Cubs lost double-digit games to the Cardinals in all but one season. The Cardinals won a World Series title during that seven-year span (2011), ending all but one of those campaigns with a postseason appearance. The Cubs, meanwhile, had five straight fifth-place finishes and missed the playoffs in all but the last.

But since the end of the 2015 regular season, the Cubs are 30-20 against their biggest rivals, a record that includes that 3-1 series win in the 2015 NLDS.

And now it's the Cubs who have seemingly built a winning machine. Like the Cardinals dominated the division with a core cast of characters that included Molina as well as Albert Pujols, Adam Wainwright and Matt Holliday, the Cubs now have that reliable core featuring Anthony Rizzo, Kris Bryant, Baez, Contreras and so many others. They're expected to be at the top of the Central standings and compete for championships, just like the Cardinals were for much of a decade.

The Cardinals, of course, have quite recently been thrown into a state of atypical tumult with manager Mike Matheny fired in the middle of the season and a couple off-the-field controversies grabbing national headlines. That's not to say they're exactly out of contention, though, as they begin the second half with an above-.500 record, 7.5 games back of the division-leading Cubs and only four games back for the second NL wild card spot.

But when you compare the drama-drenched Cardinals with the Cubs — who while no one would describe as firing on all cylinders have managed to stay not far behind their 2016 pace — there's a noticeable gap, a gap that's somewhat crazy to think about for those who can remember the Cardinals' past dominance in this rivalry.

Though the Cardinals have actually won more head-to-head matchups this season (five of the eight), the five-game set to begin the second half — the first of eight games between the two teams over the next two weekends — would figure to favor the Cubs, who won 12 of 15 to close out the first half.

"It's important for us to go out there and try to win the series. Right now, we need that as a club," Molina said. "It's going to be tough. The Cubs, they're playing good baseball right now, they've got chemistry there. It's going to be tough, but our concentration is on trying to win the series."