The package coming back to Arizona is a little light given how good Valverde was last year; a pitcher like that should have had a greater market value, even though this deal is still good for the Snakes. Chad Qualls is a groundball-machine reliever who runs his sinker up to 94 mph, with more sink in the 90-91 mph range. He also throws a cutter/slider in the high 80s to set off the sinker and get some swings and misses; think of him as Manny Corpas Lite. Because he's been so durable, averaging over 83 innings a year in the big leagues, Qualls has actually been more valuable than Valverde in raw production. Since the Diamondbacks know how to deploy their relievers, they're not likely to miss a beat with the switch from Valverde to Qualls. Juan Gutierrez, a right-handed pitcher and one of the two players the D-backs acquired from the Astros for Valverde, has a live arm with one good secondary pitch, but needs to work on his breaking ball and his fastball command before he can pitch in a big-league rotation. His fastball is above-average at 91-94 mph; it's mostly straight but it occasionally shows some late life. His changeup is plus but inconsistent, 79-81 mph with good arm speed and a very late fading action. His curveball needs a lot of work, as right now it's a slow roller that's just a show-me pitch, and he may be better off thowing a slider given his arm slot and the lack of bite on his deuce. Chris Burke, the other player obtained in the trade, has to be one of the bigger draft disappointments of the decade. He was the 10th overall pick in the 2001 draft, and in 2004 hit .315/.385/.507 in Triple-A while playing his home games in a pitchers' park. Yet other than a well-timed playoff homer in 2005, since he reached the majors he hasn't performed anywhere near the level expected of him. His swing can get long and his approach has been way too aggressive since he reached the majors. It's possible that Houston's constant position-switching with Burke -- all to accommodate Craig Biggio well past the point when Biggio was helping the club -- set his offensive development back, but there's no everyday role open in Arizona for him to establish himself.