Roy Oswalt allowed three hits over seven innings Friday and teamed with two relievers in a shutout, bringing Houston a 1-0 decision over Arizona. The Diamondbacks opened a 10-game, four-city trip by losing their sixth in a row. Oswalt (7-4) ended a steak of four straight no-decisions with a 100-pitch effort.

The first home run in a Cincinnati uniform for Ramon Hernandez, a two-run shot in the ninth, lifted the Reds to a 2-1 win over Houston Friday. Three Houston pitchers had combined to throw shutout ball through eight innings, when Jose Valverde (0-1) came on in an attempt to pick up his first save of the season.

The Arizona Diamondbacks wanted ace Dan Haren without having to deplete their stable of young talent. Trading major league saves leader Jose Valverde in a separate deal solved that problem.

Dan Haren is off the market, and the Arizona Diamondbacks have an imposing 1-2 punch at the top of their rotation.

The Arizona Diamondbacks acquired All-Star pitcher Dan Haren from Oakland and traded major league saves leader Jose Valverde to Houston in separate swaps involving 12 players Friday.