Johnson, Arizona win at Colorado

DENVER -- Randy Johnson pitched six solid innings and singled in a run, Adam Dunn doubled in his Arizona debut and the Diamondbacks beat the Colorado Rockies, 4-2, Tuesday night.

Dunn went one for three with a walk and Chad Tracy homered for Arizona, which has won two straight after a four-game skid. The Diamondbacks acquired Dunn from the Cincinnati Reds on Monday for a minor leaguer and two players to be named.

Johnson (10-8) gave up two runs and five hits, struck out seven and walked one to earn his sixth win in his last seven starts. Brandon Lyon pitched the ninth for his 25th save in 30 chances.

Colorado has lost three consecutive games.