​So who was the ​mystery team who claimed Washington Nationals second baseman Daniel Murphy on waivers? According to national sports radio host Craig Mish, that would be the Chicago Cubs, who swapped in under the radar to grab the potent bat.

The two sides are ​beyond working on a deal, it turns out, as Daniel Murphy's move to the Cubs is being finalized.

Murphy has been limited to just 56 games, but he's slashing a respectable .300/.341/.442 with 15 extra-base hits (six home runs) and 29 RBI.

And in the postseason--especially at Wrigley--there's almost no one you'd rather have. An elite addition to the presumptive National League favorites.

In exchange, the Nats are receiving second base prospect Andruw Monasterio.

The addition of Murphy gives the Cubs another big bat they can plug in the middle of the order, as well as someone who has very good numbers in the postseason. In 24 career playoff games he's hitting .323 with eight home runs.