PHOENIX (Interstat) — The Arizona Diamondbacks erupted for seven runs in the fifth inning and added five more in the sixth to overwhelm the Athletics 15-5 on Wednesday afternoon at Chase Field.

A crowd of 19,343 watched Arizona improve to 53-49, while the Athletics dropped to 43-59. The game lasted 3 hours, 1 minute.

Arizona starter Merrill Kelly earned the win, improving to 8-8. He allowed two earned runs on five hits over five innings with three strikeouts and two walks. Athletics starter Gage Jump took the loss, falling to 3-6 after surrendering nine runs on seven hits in four-plus innings.

The Athletics struck first in the third inning. Jonah Heim led off with a double to center field. Jacob Wilson singled to right, moving Heim to third. Tyler Soderstrom then grounded out to second base, scoring Heim for a 1-0 lead.

Arizona answered in the fourth. Corbin Carroll led off with a solo home run to left-center, his 15th of the season, tying the game. Two batters later, Nolan Arenado hit a solo homer to left, his 14th, giving the Diamondbacks a 2-1 lead.

Oakland tied it again in the fifth. Jeff McNeil hit a solo home run to right, his fourth of the year, making it 2-2.

Then came the decisive bottom of the fifth. Ketel Marte led off with a double to left. After a groundout moved Marte to third, a second groundout failed to score him, but Gabriel Moreno followed with a home run to center, his seventh, putting Arizona ahead 4-2. Arenado walked. Ildemaro Vargas doubled to center, scoring Arenado to make it 5-2. James McCann then homered to left-center, his third, scoring Vargas and pushing the lead to 7-2. Tim Tawa singled to right, and Ryan Waldschmidt crushed a two-run homer to left-center, his first of the season, extending the lead to 9-2.

The Diamondbacks kept pouring it on in the sixth. Carroll tripled to center. Moreno walked. Arenado walked to load the bases. Vargas walked to force in a run, making it 10-2. McCann singled to left, scoring Moreno for an 11-2 lead. Tawa doubled to center, scoring Arenado and Vargas for a 13-2 lead. Waldschmidt then hit a sacrifice fly to center, scoring McCann to make it 14-2.

Oakland chipped away in the seventh. McNeil singled, Lawrence Butler walked, and Heim singled to left, scoring McNeil to trim the deficit to 14-3.

Arizona added a run in the eighth. Vargas singled, advanced on a wild pitch, and scored on a single by Tyler Locklear, making it 15-3.

The Athletics scored two in the ninth. Donovan Walton doubled to right. Tommy White walked. Butler singled to right, scoring Walton. Heim was hit by a pitch, loading the bases. Alika Williams hit a sacrifice fly to center, scoring White for the final margin of 15-5.

Waldschmidt finished 2-for-4 with a home run, a sacrifice fly and three RBIs. Ildemaro Vargas went 3-for-4 with a double, a walk, a run and one RBI, playing first base, second base and pitching in the game’s final inning. He was the most impactful position player according to the game’s key performers list. Gerardo Carrillo pitched two innings of relief, allowing one earned run on three hits with one strikeout. Nolan Arenado walked three times and hit a solo home run in his only at-bat. Tyler Locklear, batting as a pinch hitter and playing first base, went 1-for-2 with an RBI. Kelly’s five-inning start was solid. Ketel Marte went 2-for-4 with a double. Jonathan Loáisiga pitched a scoreless inning, allowing no hits with one strikeout. Max Kepler, appearing as a pinch hitter and left fielder, went 0-for-1. Corbin Carroll went 2-for-4 with a triple, a home run and one RBI.

The Athletics collected 10 hits, including two each from McNeil, Heim and Wilson. Arizona pounded out 17 hits.

The game was the third of a three-game series. The Diamondbacks won Tuesday 6-5, while the Athletics won Monday 5-2.

Interstat’s game simulator had projected a final score of 7-1 in favor of Arizona. Its ELO system gave the Diamondbacks a 62.30 percent probability of winning. The Athletics were installed as a pregame favorite with a spread of minus-1.5. The total score of 20 went under the over-under line of 9.