Anchor makes priceless face when he realizes he is live

A reporter didn't realize he was live on the air ... and he was mortified when he realized his mistake.

KCPQ actually posted the flub to its website. Anchor Tom Yazwinski was supposed to be discussing mudslides, but instead ... 'I'd be happy, man! Rangers to me are a sinking ship,' he joked to someone out in the field with him.

Just take a look at his face when he realized his Rangers comments made it on the airwaves.

The anchors thought reporter Yazwinski was talking about the Texas Rangers and the fact that Russell Wilson has been seen hanging around the team.

Wilson just won a Super Bowl for the Seahawks but also loves playing baseball. According to USA Today, he's always dreamed of playing two sports, and he was selected by the Rangers in Major League Baseball's Rule 5 draft last December.

As for Yazwinski's comment about the Rangers being a sinking ship ... he poked some fun at himself, tweeting out a photo of his daughter Stella mocking him. That's classic.