PHOENIX -- Eric Chavez has only one concern right now -- feeling fine through six weeks of exhibition games.
"I'm just worried about being healthy," Chavez said. "That's all I really care about."
Health has been the central focus of the one-time Oakland A's star, particularly in the five seasons from 2007 to 2011 when he played in just 212 games.
There have been lower back problems and bulging discs, labrum repairs, a concussion and strained hamstrings and rib cages and even a bout with food poisoning.
Last year with the New York Yankees, Chavez finally was able to complete a season without a trip to the disabled list and hit .281 with 16 homers, his highest total since hitting 22 in 2006 with Oakland.
"If I have my health, I know I have a good chance of being good," the infielder said. "It's always been about that."
Last May, Chavez began a new training regimen that begins 40 minutes before batting practice. He also met with an allergist, who told of him of some previously undiscovered food allergies.
"It's fairly new but I've been consistent with it," Chavez said. "It's helped."
Chavez's homer was an opposite-field drive to left.
Arizona starter Wade Miley threw two scoreless innings, walking two and striking out two.
Miley, who gave up three runs on three hits and a walk over two innings in his first start, had been scheduled to go three innings but hit his pitch count early.
"I started fighting myself a little bit, got a little quick in the second inning and the ball was up," he said. "I struggled with the strike zone. It's going to happen, I just have to feel it and adjust a little bit quicker."
Khris Davis hit his third home run in the bottom of the eighth, a two-run shot that gave Milwaukee its first lead at 4-3.
"He's hitting offspeed, he's hitting fastballs," Brewers manager Ron Roenicke said. "He's doing a great job."
Brewers starter Mark Rogers allowed two unearned runs on three hits and three walks in three innings. He loaded the bases with one out in the first before pitching out of trouble.
"At times, command leaves him and then comes back," Roenicke said. "He's got to get some breaking balls over but he's coming around."
Diamondbacks outfielder Tony Campana left the game in the top of the first when he was spiked on the top of his left hand by Scooter Gennett while trying to steal second. Campana had a cut and is day-to-day.
Chavez is 6 for 15 this spring. He's scored three runs and driven in three. ... Brewers general manager Doug Melvin was at the ballpark, a day after he was stung on the middle finger by an Arizona bark scorpion and went to the emergency room for three hours. ... Brewers 1B Corey Hart is set for an MRI on his right knee on Friday to see how much progress he's made since January surgery. Hart is expected to return the Brewers lineup in early to mid-May.