Major League Baseball's official Twitter page had the specifics:
If you have been watching baseball at all this season—or at any point over the last decade—you've seen enough of Dempster to know what he will bring to the table for Ron Washington's club.
Unless you cover the Rangers or are a major league scout, you probably don't know much about Villanueva and Hendricks.
They say ignorance is bliss, but that doesn't apply during the MLB trade deadline. Here are full scouting reports for both Villanueva and Hendricks.
Christian Villanueva: Third Baseman
Villanueva spends the majority of his time at third base, but is capable of playing both second and shortstop if need be. The 21-year-old was rated the No. 100 overall prospect in all of baseball by Baseball America before the 2012 season.
After an impressive 2011 campaign in which he slugged 17 homers, drove in 84 runs and stole 30 bases for the Rangers' Single-A affiliate, the Guadalajara native has tailed off this season in High-A ball.
He has upped his batting average and on-base percentage in 2012, but has seen a drop in virtually every other category. He's 5'11" and just 160 pounds, so it wouldn't be a surprise to see his numbers increase when he fills out more.
Age-wise, this is a good acquisition for the Cubs. Villanueva is old enough to possibly have an impact on the team two or three years down the row, but not too old as to have to rush him to the bigs.
His great instincts and solid glove are going to do wonders for him at the major league level. Villanueva is likely to end up with average speed and power, so an above-average glove will have him on the cusp of making the major league roster in about three seasons.
CBS Sports' Jon Heyman (via Twitter) reassures Cubs fans of Villanueva's skills:
scout says christian villanueva, young 3b who went to #cubs in rangers deal is quite good. top 100 prospect in baseball.— Jon Heyman (@JonHeymanCBS) July 31, 2012
At the very least, he'll be a better pro than the man currently manning the hot corner for the Cubs, Luis Valbuena (even though Valbuena likely won't be around in the future).
Kyle Hendricks: Right-Handed Pitcher
Hendricks figures to be the better of the two players who were sent to the Windy City for Dempster's services. Despite the fact that he hasn't been touted like Villanueva, the 22-year-old righty has shown some quality stuff this year.
In High-A ball, Hendricks has accumulated a 2.82 ERA, a staggering 1.06 WHIP and 112 strikeouts in 130.2 innings. The most notable of all his statistics is his ridiculous K/BB ratio of 7.47 (no pitcher in the majors is close to that).
He doesn't bring the heat, sporting a fastball in the high-80s most of the time, but he has exceptional command of all five of his pitches.
Hendricks was drafted by the Los Angeles Angels out of high school in 2008 but chose to play college ball at Dartmouth. He was drafted by the Rangers in the eighth round of the 2011 draft.
At 6'2", he has a decent frame for a starting pitcher, but needs to bulk up a bit before he can become the workhorse that the Cubs surely hope he can be. Hendricks pitched well through all levels of the Rangers organization, compiling a sub-two ERA in Low-A ball last season in 32.2 innings.
Don't sleep on this guy, Cubs fans. You might be looking back on this trade in five years with a smile on your face, wondering why the Rangers traded this stud for a 35-year-old starting pitching better than he ever was in his career.