PHOENIX (Interstat) — Brandon Pfaadt allowed five hits and no earned runs over 6 2/3 innings, Tim Tawa homered and drove in three runs, and the Arizona Diamondbacks beat the San Diego Padres 5-1 on Monday night at Chase Field.

Pfaadt (6-1) struck out three and walked one for Arizona, which improved to 60-53. He retired the side in order in the first, third, fifth and sixth innings, and he worked out of a two-on, two-out jam in the seventh before handing the ball to the bullpen. Michael King (6-8) took the loss for San Diego, allowing five hits and three earned runs over five innings with five strikeouts and three walks.

The Diamondbacks broke a scoreless tie in the fourth inning. Ketel Marte walked on four pitches to open the frame, and after Nolan Arenado popped out, Adrian Del Castillo singled to center to put runners at first and second. Tawa, a left-handed-hitting first baseman who began the night batting seventh, fell behind in the count before turning on a King pitch and sending it over the left-field fence for a three-run homer, his fifth of the season. The blast gave Arizona a 3-0 lead and stood as the decisive hit of the night.

San Diego threatened in the fifth when Luis Campusano hit a one-out double to left, but Xander Bogaerts flew out to right to end the inning. The Padres put two runners on in the second and another in the third, but Pfaadt escaped each time. In the second, Jackson Merrill singled with two outs, and Luis Rengifo followed with a fly out to left. In the third, Bogaerts led off with a sharp single, but Sung-Mun Song grounded into a double play. Fernando Tatis Jr. then grounded out to short.

The Padres finally broke through in the seventh. Ty France walked with one out, and after Jackson Merrill popped out, Luis Rengifo singled on a ground ball to right, sending France to second. Luis Campusano then singled on a ground ball to third baseman Nolan Arenado. France scored and Rengifo advanced to third when Arenado’s throw to first skipped away for an error. Xander Bogaerts struck out swinging to end the inning with the score 3-1.

Arizona answered in the eighth with two more runs. Arenado led off with a single to right, and Adrian Del Castillo sacrificed him to second. Tawa followed with a single to shortstop, moving Arenado to third. James McCann then doubled down the left-field line, scoring Arenado and sending Tawa to third. Jorge Barrosa hit a sacrifice fly to center, scoring Tawa for a 5-1 lead. The Diamondbacks put together the two-out rally against San Diego reliever Wandy Peralta, who allowed three hits and two earned runs in his one inning of work.

The Diamondbacks finished with nine hits, while the Padres had six. Tawa went 3 for 4 with his homer and three RBIs, matching his season high for RBIs in a game. McCann went 2 for 4 with an RBI and a double. Campusano went 2 for 3 with a double and an RBI for San Diego. Luis Rengifo also collected two hits for the Padres.

Arizona’s bullpen closed out the game after Pfaadt departed. Juan Morillo entered with two runners on and two outs in the seventh and struck out Bogaerts to end the inning. Morillo then worked a scoreless eighth, allowing one hit and striking out two. Brandyn Garcia pitched a perfect ninth for the Diamondbacks, needing just 10 pitches.

San Diego’s relief corps had mixed results. Yuki Matsui threw 1 1/3 scoreless innings, allowing one hit and striking out two. Jeremiah Estrada recorded two outs in the eighth without allowing a run. Peralta, the fifth Padres pitcher, was charged with the two runs in the eighth.

Pfaadt’s performance continued a strong stretch for the right-hander. His previous two starts included seven shutout innings against the Los Angeles Dodgers and seven scoreless innings at Pittsburgh. Against the Padres, he threw strikes early and relied on his changeup to keep San Diego off balance. He did not allow a hit after the third inning until Rengifo’s single in the seventh.

King, who had won his previous start, was sharp through the first three innings but labored in the fourth. He walked Marte and allowed the double to Del Castillo before Tawa’s homer. King finished with a season record of 6-8 and an ERA that rose slightly as a result of the three-run frame. He threw 84 pitches and struck out five.

The game took 2 hours, 33 minutes and was played before an announced crowd of 22,008 at Chase Field. The attendance was the fourth-largest of the season for the Diamondbacks at home.

Arizona, which had lost its previous game at Cleveland, snapped a brief two-game skid and remained within reach of the top of the National League West race. San Diego, which had won three straight after sweeping San Francisco in a weekend series, fell to 58-55. The Padres remained above .500 but lost ground in the division chase.

The two teams continue their four-game series on Tuesday night at Chase Field. Arizona will send a right-hander to the mound against a San Diego starter who won his last outing. The Padres are scheduled to visit Houston after the series, while Arizona will host Los Angeles beginning Friday.

Interstat’s game simulator projected a 7-6 Arizona victory, and its ELO system gave the Diamondbacks a 51.60 percent chance to win. San Diego was a 1.5-run favorite, and the combined score of six went over the over/under line of eight.