OAKLAND -- Sean Manaea's rough month of May continued Friday night, as the A's starter was knocked around by the D-backs to the tune of a 7-1 loss at Oakland Coliseum.
Manaea allowed six runs on eight hits and lasted just 3 2/3 innings, his shortest outing of the season. The knockout punch came in the fourth inning off the bat of Paul Goldschmidt, who hit a two-out, two-run triple just out of the reach of left fielder Chad Pinder's dive that put the D-backs ahead 6-1.
"I'm just falling behind guys and not really trusting my stuff right now," Manaea said. "It's baseball. I just have to figure things out."
Manager Bob Melvin praised the D-backs' offense for its approach against Manaea. He also said that the southpaw left pitches over the plate more than normal. That resulted in the D-backs -- who had lost seven consecutive games and entered the game last in the Majors in batting average -- scoring their highest run total in a game in more than two weeks.
"[The D-backs] took advantage of it," Melvin said. "A team that wasn't swinging really well swung the bat pretty well tonight."
Manaea, who entered May among the league leaders in ERA, has now allowed four or more runs in each of his last five starts, raising his ERA from 1.03 to 3.34.
"Maybe," Manaea said when asked if he was forcing things a bit. "I'm just trying to figure out some things. I really don't have an answer for that."
The D-backs jumped on Manaea early, with the second batter of the game -- Nick Ahmed -- homering to left field. After a scoreless second, Manaea allowed the first two batters to reach in the third inning and John Ryan Murphy knocked in both with a double to center.

At the plate, the A's mustered only four hits off D-backs starter Patrick Corbin, who went seven innings, striking out seven and walking just one. Mark Canha hit his seventh homer of the season in the third inning for the A's lone run of the game.

The A's have struggled offensively at home as of late, scoring two runs or fewer in eight of their last nine games at the Coliseum. Melvin credited Corbin's slider, but also noted the absence of Khris Davis, who went on the disabled list on Wednesday with a groin strain.
"He's kind of that sledgehammer in the middle of the lineup, and everybody kind of rallies around him," Melvin said. "I don't want to say guys are putting more pressure on themselves, but when you lose a big bat like that, certainly your offense is going to suffer a little bit."

CASILLA EXITS WITH INJURY
Right-hander Santiago Casilla departed with two outs in the eighth inning with a shoulder injury and was later diagnosed with a strain that will likely put him on the disabled list.

SOUND SMART
Canha's homer ended a seven-game homerless drought for the A's at home, the longest such streak in Oakland history.
YOU GOTTA SEE THIS
With two outs and a runner on third in the second inning, D-backs speedster Jarrod Dyson tried to bunt his way on base, but third baseman Matt Chapman showed off his defensive prowess with a great play on the run.

HE SAID IT
"He was throwing strike one, then expanding with the slider. The approach today was try to stay off the slider if he gets ahead. For a while we did it pretty well, then he started reading some takes and swings and started throwing some strikes in there. He's got a really good slider and it's tough to lay off." -- Melvin, on the A's approach against Corbin
UP NEXT
Right-hander Daniel Mengden will toe the rubber for the A's on Saturday, looking to continue his strong May. He is sporting a 1.46 ERA through four starts, and tossed seven shutout innings in Sunday's win over the Blue Jays. The Diamondbacks will counter with veteran Clay Buchholz, who made his season debut Sunday and allowed one run in five innings against the Mets. First pitch is scheduled for 1:05 p.m. PT.