WASHINGTON — Ketel Marte hit two of Arizona’s five homers and the Diamondbacks beat the Washington Nationals 10-3 on Saturday.

Marte homered on the first pitch of the game and added his 19th homer of the season leading off the fourth inning as Arizona took the first and third games of the four-game set.

Strasburg (7-4) allowed four homers in a game for the second time in his career, the first since August 8, 2014, at Atlanta. Strasburg, who had won four straight decisions, gave up a season-high nine hits and tied a season-high by allowing six earned runs.

Adam Jones also homered in the first inning, his 13th, to push Arizona’s lead to 2-0.

The Nationals countered by scoring three times in the bottom half of the inning for a 3-2 lead. Trea Turner scored on Adam Eaton’s sacrifice fly before Juan Soto and Matt Adams hit solo homers.

Christian Walker hit his 12th homer of the season in the second, tying the game at 3-all, and Carson Kelly hit an RBI single as the Diamondbacks moved ahead to stay at 4-3.

Strasburg gave up three home runs in his first 21 pitches after allowing just two homers in his previous eight starts combined.

Yoshihisa Hirano (3-3) allowed two hits while striking out two in 1 2/3 innings.

Nick Ahmed had an RBI double in the third that pushed the lead to 5-3. Ahmed also tripled in the second and singled in the eighth and the ninth, finishing with four hits.

Kevin Cron hit a pinch-hit homer in the eighth for Arizona.

TRAINER’S ROOM

Diamondbacks: 3B Jake Lamb (strained left quad) homered on Friday for Triple-A Reno and is batting .250 with six RBIs in five rehab games. “All things considered, we’re really excited about how he’s feeling,” Arizona manager Torey Lovullo said. … 2B Wilmer Flores (right foot contusion) will wait another week before beginning baseball activities after his most recent CT scan didn’t show enough healing.

Nationals: Adams (back spasms) was back in the lineup for the first time since Monday. Adams had missed Washington’s previous three games.

UP NEXT

Diamondbacks: Archie Bradley will get his first start of the season Sunday. He had been used only in relief this season for the D-backs.

Nationals: RHP Anibal Sanchez (2-6, 3.92 ERA) will take the mound Sunday looking for his 100th career win. Since coming off the injured list on May 29, Sanchez is 2-0 with a 1.04 ERA in three starts.