Kyle Schwarber, the Cubs' 6-0, 235-pound mega-rookie, reduced Cardinals pitcher Kevin Siegrist to a pulp Tuesday. During the Cubs' 6-4 NLDS clinching win, Schwarber, 22, belted a home run that appeared to clear the right field scoreboard and land on Sheffield Avenue.

The ball actually came to rest atop the scoreboard.

WGN sent a helicopter above Wrigley Field to get a closer look at the mystery ball. The Cubs followed suit, sending a team employee to examine the ball.

The Cubs confirmed the identity of the baseball via the Chicago Tribune:

A Cubs source confirmed to the Tribune that the monstrous Kyle Schwarber home run ball from Tuesday’s series-clinching win over the Cardinals landed on top of the right field video board.

A Cubs' employee was sent to retrieve the ball on Wednesday morning and a source said the team verified it was the actual Schwarber ball through an MLB postseason watermark on it.

The Cubs then returned it to its original location on top of the board and will leave it there until their postseason run has concluded.

The source said the Cubs will decide what to do with the ball after the season, but wanted to leave it there for now as a memento of the Game 4 win. The Cubs will put a plexiglass case around it for now to preserve it from the elements.

Just three months ago, Schwarber was still toiling in his final stint with Triple A Iowa. Now, he is slugging home runs halfway to Lake Michigan and igniting Chicago.

And of course, helping beg the question, "Is this the year?"

If the Cubs do magically (and we really mean magically) run the table and win their first World Series since 1908, Schwarber's home run will probably stay atop the scoreboard longer than a year. It may stay there forever.

The Oakland Athletics are joking that the ball made it to the Bay Area.

For reference, here is Schwarber's moon shot into Pittsburgh's Allegheny River during the NL Wild Card Game on Oct. 7.

Schwarber was the fourth overall pick in the 2014 MLB Draft. He seems worth it. He just gave the Cubs a long-term memento.

The Cubs return to action Saturday night in either Los Angeles or New York against the winner of the Dodgers-Mets NLDS series. Those teams play their Game 5 Thursday at Dodger Stadium.

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-- Follow Jeffrey Eisenband on Twitter @JeffEisenband.