Cover Photo: John McCoy/Getty Images

Kenley Jansen is a big reason the Dodgers win a lot of close games. His numbers back that up -- 34 saves in 38 chances, a 2.93 ERA, 1.03 WHIP and 69 strikeouts in 61 1/3 innings this season.

It's those numbers and the unquestioned leader of the Dodgers' bullpen that might be forced to sit out this weekend's three-game series in Colorado with the NL West division-leading Rockies. Jansen showed symptoms of an irregular heartbeat last month in the high altitude in Denver.

After missing games due to that condition, Jansen returned to his usual form, picking up two saves and a win in his last three scoreless appearances. He is scheduled to see a second cardiologist Thursday to determine the risks of returning to Colorado. While it's a precaution for Jansen, it could affect the outcome of the Dodgers' season as a whole.

The Dodgers are 7-6 against the Rockies this year, so the difference between the two teams isn't anything significant. The loss of their stopper could be the difference between making the playoffs and missing out on the postseason. Coming into Wednesday's games, the Rockies lead the NL West by 1/2 a game over the Dodgers, who are also one game out of the second Wild Card spot.

Dodgers manager Dave Roberts said he would likely play matchups if Jansen does indeed miss time again. If you're in the fantasy playoffs this weekend, Kenta Maeda or even Ryan Madson make for nice handcuffs for Jensen owners.

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