PHOENIX (Interstat) — The Arizona Diamondbacks rallied for two runs in the bottom of the 10th inning to defeat the Athletics 6-5 on Tuesday night at Chase Field, erasing a one-run deficit after the Athletics had forced extra innings with a two-run ninth.

The walk-off victory before an announced crowd of 19,709 gave Arizona its second straight win and improved the Diamondbacks’ record to 52-49. The Athletics dropped to 43-58. The game lasted 3 hours, 15 minutes.

Arizona struck first and struck hard in the bottom of the first against Athletics starter Hogan Harris. Ketel Marte drew a leadoff walk, and after two flyouts, Gabriel Moreno singled to put runners at first and second. Max Kepler then launched a two-run homer to right-center field, his second of the season, scoring Marte and Moreno to give the Diamondbacks a 3-0 lead. Nolan Arenado lined out to end the inning.

The Athletics answered in the third. Lawrence Butler led off with a triple to center field, and Alika Williams followed with an RBI single to right, cutting the deficit to 3-1. Jacob Wilson was hit by a pitch, and Tyler Soderstrom walked to load the bases with one out, but Shea Langeliers lined out sharply to shortstop and Jonah Heim grounded into a double play to end the threat.

Both teams had scoring chances over the middle innings but came up empty. Arizona threatened in the fifth when Geraldo Perdomo doubled with two outs, but Corbin Carroll struck out to end the inning. The Diamondbacks added a run in the seventh. Ildemaro Vargas walked, Jorge Barrosa walked, and Marte lifted a sacrifice fly to center field that scored Vargas for a 4-1 lead.

The Athletics began their comeback in the eighth. Langeliers led off with a solo home run, his 23rd of the season, to make it 4-2. Heim followed with a single and Tommy White singled to put runners at first and second with no outs, but Jeff McNeil grounded into a double play to stall the rally.

Down to their final three outs in the ninth, the Athletics mounted a dramatic rally. Carlos Cortes lined out to start the inning, and Butler struck out on a foul tip. With two outs, pinch-hitter Donovan Walton tripled to center field. Jacob Wilson then crushed a two-run homer to left field, his seventh, scoring Walton and tying the game at 4-4. Soderstrom struck out to send the game to extra innings.

In the bottom of the ninth, Arizona had a chance to win in regulation. Barrosa reached on a bunt single, but Marte flied out, Perdomo lined out and Carroll grounded out to force extra innings.

The Athletics took the lead in the top of the 10th. With the extra-inning rule placing a runner at second base, Soderstrom started the inning at second. Langeliers grounded out, advancing Soderstrom to third. Heim then lifted a sacrifice fly to center field, scoring Soderstrom and giving a 5-4 lead. White flied out to end the inning.

The Diamondbacks answered in the bottom of the 10th. Pinch-runner Corbin Carroll was placed at second base. Gabriel Moreno walked, and Kepler also walked after a challenged pitch result was confirmed, loading the bases with no outs. Arenado then singled to center field, scoring Carroll and tying the game at 5-5, with Moreno advancing to third and Kepler to second. Tim Tawa struck out looking for the first out. Ildemaro Vargas then singled to left field, scoring Moreno and giving Arizona a 6-5 walk-off victory.

Kevin Ginkel earned the win, improving to 4-3, after pitching a scoreless 10th inning. Luis Medina took the loss for the Athletics, falling to 2-1, after allowing two runs in the 10th.

Key offensive contributors included Wilson, who drove in two runs with his ninth-inning homer and finished 1 for 4 with a walk. Walton went 1 for 1 with a triple and a run scored. Heim drove in two runs, including the sacrifice fly in the 10th, and finished 1 for 4. White had two hits in five at-bats. Butler tripled and scored a run. Williams had an RBI single.

For Arizona, Kepler drove in three runs with his first-inning homer and a walk. Arenado had the game-tying single in the 10th and finished 1 for 4. Vargas delivered the walk-off hit and went 1 for 4 with a walk and a run scored. Moreno walked twice, scored two runs and had a single.

The Athletics had 9 hits and the Diamondbacks also had 9 hits.

Interstat’s game simulator had projected a final score of Arizona 7, Athletics 1, and the ELO system gave the Diamondbacks a 63.30 percent probability to win. Arizona was installed as a pregame favorite with a spread of minus-1.5 runs. The total runs of 11 went over the over-under line of 9.5.