SAN FRANCISCO -- Kevin Gausman's unbeaten start to the season came to an end last week in Washington, D.C., but it didn’t take long for the Giants’ ace right-hander to get back to his winning ways.

Gausman fired eight innings of two-run ball, and his batterymate, Curt Casali, homered and drove in four runs as the Giants routed the D-backs, 10-3, to finish off a four-game sweep on Thursday afternoon at Oracle Park.

Casali, Steven Duggar and Mauricio Dubón -- the club’s 6-7-8 hitters -- accounted for eight of the Giants’ 15 hits to help San Francisco improve to 6-0 against Arizona this season and 44-25 overall, the best record in the National League. It was an ignominious defeat for the D-backs, who became the first team in the Modern Era to lose 23 consecutive road games.

“We’re just trying to do our part,” said Duggar, who went 3-for-3 to boost his batting average to .324 on the season. “I just think it’s a testament to the guys at the top wearing down pitchers, honestly. We’re able to talk and get some feedback through those early guys in the lineup and ultimately capitalize on some mistakes today.”

Gausman was charged with his first loss of the year after giving up two runs over a season-low four innings in Game 1 of the Giants’ doubleheader at Nationals Park on Saturday, but he rebounded with another quality start against Arizona.

The 30-year-old veteran allowed only a third-inning single to right-hander Zac Gallen through his first six innings, though the D-backs managed to halt his shutout bid by scoring a pair of runs in the seventh to cut the Giants’ lead to 6-2. Gausman yielded only four hits, walked one and struck out six to move to 8-1 with a 1.51 ERA over 15 starts this year, the second-lowest mark in the Majors, behind only the Mets’ Jacob deGrom (0.54).

If he stays healthy, deGrom will be the favorite to start for the NL at the 2021 All-Star Game at Coors Field next month, but manager Gabe Kapler said he believes Gausman -- a Centennial, Colo., native -- deserves to be in the conversation as well. No pitcher has been as dominant as deGrom this season, but Gausman has consistently pitched deeper into games, accumulating 89 2/3 innings compared to deGrom’s 67.

“deGrom is an animal, and I have the utmost respect for him,” Kapler said. “I’ve seen quite a bit of him, and I think he’s fantastic. Our guy gets my vote, obviously, because I see the work, day-in and day-out. I see the preparation, and I see the consistent performance and the ability to kind of put the rest of our team on his shoulders. I think he’s worthy of consideration, and obviously, I’d be behind that 1,000 percent.”

Gausman, for his part, feels the nod should go to deGrom.

“I think his numbers kind of speak for themselves,” said Gausman. “He’s a guy that I think if he’s healthy and can keep doing what he’s doing, he’s absolutely going to start the All-Star Game. If he keeps giving up no runs every time he pitches, he’s going to start the All-Star Game.”

Gausman benefited from early run support, as Casali crushed his first home run of the year -- a two-run shot off Gallen -- to put San Francisco on the board in the second inning. Casali, who entered Thursday batting .135, hammered a 3-2 fastball out to left-center field to deliver the Giants’ 100th home run in their 69th game of the season. The 2021 Giants are the third-fastest club in team history to reach the 100-homer mark, trailing only the 1947 club (67th game) and the 2000 club (68th game), according to Stats LLC.

“That’s pretty cool,” Casali said. “Genuinely, I was just hoping to get one this year after the way it’s been going, but I’m just happy to contribute. I’m thrilled to be on this team. It’s a blast to be around.”

Casali added his first career triple in the fifth with the help of D-backs outfielders Pavin Smith and Josh Reddick, who appeared to miscommunicate on his drive to right-center field. Casali hadn’t tripled since he was at High-A Charlotte in the Rays’ organization in 2013, but as soon as he saw the ball drop, he kicked into gear and motored all the way to third to knock in Brandon Belt and stake the Giants a 6-0 lead.

Casali missed time with a left wrist sprain earlier this month, which has hampered his production at the plate, but he’s been showing signs of an offensive turnaround since returning from the injured list. On Thursday, he became the first Giants catcher with a home run and a triple in the same game since Bengie Molina on April 29, 2009.

Casali finished a double shy of the cycle and had a shot to complete the feat when he strode to the plate against D-backs reliever Keury Mella in the bottom of the eighth inning, but he worked a 3-2 count before flying out to Reddick in right field.

“To anybody watching out there, I really appreciate you cheering for me,” Casali said. “It meant the world to me, especially considering how difficult of a season it’s been for me personally. It means a lot. I really appreciate it.”