Overbay became just the 11th player to homer over the right field stands at PNC Park when he connected off
(1-2) to lead off the sixth and snap a 1-1 tie.
"I have been feeling pretty good and seeing the pitches. It is a matter of taking advantage," Overbay said. "It is being more aggressive on my part. Today just went my way."
It was Overbay's third homer of the season.
"That is about as hard as we have seen him hit the ball," Arizona manager
said. "It cleared the whole thing out there in right field. That is the kind of hitting that we have been expecting of him."
Entering the game in a 4-for-31 slump, Overbay also drove in a run with a first-inning single.
Batista (3-2) allowed just one run and five hits in six innings and improved to 3-0 in six starts since joining the rotation in mid-April. The righthander moved into the rotation when
was forced to miss a start on April 16 and he has been there since.
was really locked in today," Brenly said. "His bread and butter pitch is the cut fastball. It sure was what we needed today. We did not score a lot but got the big outs we needed."
Batista walked one and struck out six. Four relievers followed, with
working the ninth for his sixth save.
Wells (1-2) was the hard-luck loser for the Pirates, allowing two runs and five hits in seven innings.
"I don't think the game turned on one pitch," Wells said of Overbay's homer. "I pitched a good game."
had an RBI single for Pittsburgh, which has lost eight of its last nine games.
was thrown out on a grounder to shortstop on a close play to end the eighth. Wilson saw the replay on the scoreboard and went back for a second time to argue with first base umpire Fieldin Culbreth before being ejected.
"I argued first because I thought I was safe," Wilson said. "Walking away, I saw it on the scoreboard and I knew I was safe. I turn around again to argue and he threw me out of the game."
The Diamondbacks have won back-to-back series for the first time since taking three series in a row last September.