Twins Trade Francisco Liriano To White Sox
Neither prospect the Twins received is highly, or even semi-highly, regarded. Escobar was not in Baseball America's list of the White Sox top 10 prospects prior to the season. He was #7 on Baseball Prospectus' list, but is listed as a 2-star (out of five) prospect.
Escobar is just 23 years old and has spent this year in the majors with the White Sox. It's not clear why; it appears he have two option years left and it's hard to make a case that he's earned that promotion. Last year he hit .266 with a .303 OBP in AAA. In fact, his career OBP through all the levels of the minors is just .315 and he's struck out 100+ times in his last two years. Not too surprisingly, he's hitting .195 in the majors, albeit in just 92 plate appearances.
Pedro Hernandez also did not not make Baseball America's top 10 and ranked 15th on the Baseball Prospectus list. He's pitched at three level this year: 12 starts in AA, two starts in AAA and a single major league start. But he's clearly been rushed through AAA with just six starts. He's 23 years old.
He fits the stereotyped Twins pitcher - good control but not dominating stuff, or at least dominating as measure by strikeouts. His career minor league average is 7.4 K/9, which is below average. This year in AA he posted a 2.06 ERA - but also struck out just 37 batters in 68 IP. That's a lower rate than even Nick Blackburn had in AA.
Hernandez has also never pitcher more than 116 inning in the minors or had more than 18 starts. He has been used as a reliever several time throughout the minors. However, he has shown outstanding control with a K to BB ratio approaching 5:1, although that has suffered as he has made his way up the minor league ladder.
I've made the mistake several times of leaping to conclusions about lower level prospects that Terry Ryan has targeted who have turned out far better than I might have hoped. Jason Bartlett and Alexi Casilla both some to mind, and I'm sure there are more. But at first glance, it looks like Liriano was traded to a division rival for two C prospects that might fill needs but are long shots to have any long-lasting impact on the organization.