PHOENIX (Interstat) — Nolan Arenado hit a grand slam in the first inning and Gabriel Moreno homered and drove in three runs as the Arizona Diamondbacks routed the San Francisco Giants 12-2 on Monday, May 18, 2026, at Chase Field. Attendance was 20,072 with a game time of 2:26. Arizona scored four in the first, one in the second, two in the third and five in the fifth. San Francisco scored single runs in the second and third. The Diamondbacks finished with 16 hits to eight for the Giants. Arenado’s grand slam, his seventh of the season, scored Ketel Marte, Corbin Carroll and Geraldo Perdomo. Moreno homered in the fifth with Ildemaro Vargas aboard. Ryan Waldschmidt doubled in a run, and Marte added an RBI single later in the inning. An error by shortstop Willy Adames allowed another run. Zac Gallen (2-4) earned the win. Robbie Ray (3-6) took the loss. Arizona improved to 23-23; San Francisco dropped to 20-28.

PHOENIX (Interstat) — Nolan Arenado hit his seventh career grand slam, Gabriel Moreno added a two-run homer, and the Arizona Diamondbacks defeated the San Francisco Giants 12-2 on Monday night at Chase Field. Arizona matched season highs with 12 runs and 16 hits. Every Diamondbacks starter had at least one hit. Ryan Waldschmidt led the way with two doubles and a single, drove in a run and scored twice. Corbin Carroll tripled for the fifth time this season and singled. Zac Gallen delivered his second quality start and the ninth overall for the Diamondbacks since May 5. He threw six innings, struck out five and allowed four hits and two runs, both earned. Gallen entered the game with a 1-4 record and had struggled in his previous two outings, allowing seven earned runs in 4 2/3 innings at Texas on May 12 and four earned runs in six innings against Pittsburgh on May 7. Robbie Ray took the loss for San Francisco, falling to 3-6. He lasted only 3 1/3 innings, giving up seven runs, six earned, on nine hits with two walks and two strikeouts. The Giants fell to 20-28, while Arizona improved to 23-23. The Diamondbacks wasted no time putting the game out of reach. In the bottom of the first inning, Ketel Marte led off with a sharp line-drive single to right field. Corbin Carroll followed with a line-drive single to right, sending Marte to second. Geraldo Perdomo then reached on a fielder’s choice that loaded the bases when third baseman Matt Chapman committed a fielding error, allowing Marte to advance to third and Carroll to second. Arenado stepped in and crushed the first pitch he saw from Ray over the left-field wall for his seventh career grand slam and his seventh home run of the season. The blast scored Marte, Carroll and Perdomo, giving Arizona a 4-0 lead before the Giants had recorded an out. Arenado’s grand slam was the most important play of the game, as it immediately set the tone and forced the Giants into a deep hole from which they never recovered. Arizona added another run in the second inning. Ryan Waldschmidt drew a walk to start the inning. After Ketel Marte flied out, Waldschmidt advanced to third on Carroll’s triple to right field. Perdomo walked, but Arenado struck out. However, Waldschmidt scored on Marte’s sacrifice fly, extending the lead to 5-0. San Francisco got on the board in the top of the second. With one out, Willy Adames hit a solo home run to left field, his fourth of the season, cutting the deficit to 5-1. But the Giants could not string together any more offense in that inning. The Giants pulled within three runs in the third. Harrison Bader led off with a double to left field. After Eric Haase struck out, Jung Hoo Lee singled to right, sending Bader to third. Luis Arraez then hit a sacrifice fly to right field, scoring Bader and making the score 5-2. Casey Schmitt grounded into a force out to end the inning. Arizona responded immediately in the bottom of the third, putting the game away. Ildemaro Vargas singled to center, and Gabriel Moreno singled to right, putting runners at first and second. Jose Fernandez sacrificed the runners to second and third. Tim Tawa then singled to center, driving in both Vargas and Moreno, pushing the lead to 7-2. Waldschmidt followed with a single to shortstop, but Ketel Marte grounded out to end the inning. The Diamondbacks kept the pressure on in the fifth. Vargas led off with a single to right. Moreno then homered to left field, his second of the season, scoring Vargas and pushing the lead to 9-2. Jose Fernandez singled to left, and after Tawa grounded out, Waldschmidt doubled to left, scoring Fernandez to make it 10-2. Ketel Marte singled to first base, scoring Waldschmidt for an 11-2 advantage. After Carroll flied out, Perdomo singled to center, sending Marte to second. Arenado then reached on a fielding error by shortstop Willy Adames, allowing Marte to score from second and Perdomo to advance to third, making it 12-2. Vargas grounded out to end the inning. San Francisco managed only two more hits the rest of the game. The Giants went quietly against the Arizona bullpen. Brandyn Garcia pitched a scoreless seventh inning, allowing two hits and striking out one. Ryan Thompson threw a scoreless eighth, giving up one hit and striking out one. Jonathan Loáisiga worked a perfect ninth, allowing one hit and recording one strikeout. For the Giants, Ryan Borucki provided two innings of scoreless relief, allowing two hits and striking out one. JT Brubaker pitched 1 2/3 innings, surrendering three hits and one earned run while striking out one. Arizona had 16 hits, led by Waldschmidt’s three hits. Ketel Marte had two hits, including a single and a sacrifice fly, and scored twice. Corbin Carroll had two hits, including a triple and a single. Geraldo Perdomo walked twice and singled. Ildemaro Vargas had two hits and scored twice. Gabriel Moreno had two hits, including the home run, and drove in two runs. Jose Fernandez singled twice. Tim Tawa had one hit and two RBIs. James McCann had a pinch-hit single in the eighth. San Francisco had eight hits. Harrison Bader doubled twice. Jung Hoo Lee singled. Willy Adames homered and walked. Bryce Eldridge singled twice. Will Brennan singled. Casey Schmitt singled. The Giants struck out eight times. The game lasted 2 hours, 26 minutes. Attendance was 20,072. The two teams will play again Tuesday night at Chase Field, the second game of a three-game series. Arizona then hosts Colorado for four games starting Thursday. San Francisco returns home Friday to face the Chicago White Sox for a three-game series before Arizona visits San Francisco for three games starting Monday, May 25. Interstat’s game simulator had projected a final score of Arizona Diamondbacks 5, San Francisco Giants 4. Interstat’s ELO system gave Arizona a 54.90 percent probability to win. Arizona was installed as a pregame favorite with a spread of minus 1.5. The total score of 14 went under the over/under line of 9.

PHOENIX (Interstat) — The San Francisco Giants and Arizona Diamondbacks open a three-game series Monday night at Chase Field, with both teams looking to gain ground in a tight NL West race. First pitch is scheduled for 6:40 p.m. PDT. San Francisco (20-27) comes to the desert after a 10-1 rout of the Athletics on Sunday, snapping a three-game losing streak. Left-hander Robbie Ray (3-5, 4.28 ERA) will start for the Giants. Ray allowed three earned runs over 5 2/3 innings in a no-decision against the Los Angeles Dodgers on May 12. Arizona (22-23) took two of three from the Colorado Rockies over the weekend, including an 8-6 victory Sunday. Right-hander Zac Gallen (1-4, 4.75 ERA) is set to oppose Ray. Gallen has lost three consecutive decisions, last earning a win April 27 against the Dodgers. Players to watch Giants right-hander Adrian Houser has been sharp in three of his past five outings. In his most recent appearance Sunday, Houser earned his second win of the season, allowing one earned run on four hits with three strikeouts over six innings. He also worked 5 2/3 innings of two-run ball against the Dodgers on May 12. However, Houser was tagged for eight earned runs on 11 hits in four innings against the Marlins on April 24. Diamondbacks outfielder Corbin Carroll drove in three runs Sunday, going 2-for-4 with two home runs. Carroll has hit safely in six of his past eight games, including four multi-hit performances. He has three home runs and six RBIs over that span. Recent results The Giants have split their past six games, with the offense producing six or more runs in three of those contests. Center fielder Harrison Bader went 1-for-4 with a home run and four RBIs in Sunday’s win. The Diamondbacks have won three of four, with the pitching staff allowing three or fewer runs in three of those games. Closer Paul Sewald worked a scoreless ninth inning Sunday. Projected matchup Interstat’s game simulator projects a 5-4 Arizona victory. The Diamondbacks have been installed as -1.5 favorites, with the over/under set at 9 runs. Up next The series continues Tuesday and Wednesday before both teams host weekend sets. San Francisco returns home to face the Chicago White Sox, while Arizona opens a four-game series against the Colorado Rockies. The two clubs will meet again May 25-27 in San Francisco.