SAN DIEGO (AP) -- The Diamondbacks came into their three-game series against the Padres with the worst record and worst ERA in the majors.
The D-backs won the first two games and took a 3-1 lead in the fourth inning on Sunday, but they couldn't finish off the sweep, as they allowed the Padres tie it and then win it 4-3 in walk-off fashion.
Even so, Arizona leaves town having finally cracked double digits in wins and having passed Houston by one percentage point for the worst in the big leagues.
"I feel good about where we are at," said catcher Tuffy Gosewisch, who hit a two-run single in the fourth-inning. "We did some good things in this series, and I think things are headed in the right direction."
Cameron Maybin reached base after an overturned umpire's call, then scored on Yonder Alonso's slow grounder in the ninth inning to give San Diego the series-ending win. Maybin easily beat the throw home by first baseman Paul Goldschmidt, who was playing in with one out. Alonso entered as part of a double switch in the top of the inning.
The Padres snapped a four-game losing streak and scored their most runs in five games.
Maybin started the winning rally with a chopper to second against reliever Oliver Perez (0-1). He initially was called out, but Padres manager Bud Black challenged and the call was changed, giving Maybin an infield single. It made Black 2 for 2 in challenges on Sunday and 4 for 4 for the season. Rene Rivera, who earlier hit a two-run double, then doubled over right fielder Gerardo Parra's head to move Maybin to third, setting the stage for Alonso.
Huston Street (1-0) pitched the ninth for the win.
That snapped a streak of 20 scoreless innings by Arizona starting pitchers.
The Diamondbacks went ahead 3-1 in the fourth. Goldschmidt hit a leadoff homer off Tyson Ross into the sandy play area beyond the fence in right-center, his fifth of the year. With two outs, shortstop Everth Cabrera misplayed a grounder by Cody Ross for an error. Rookie Ender Inciarte then singled to left, and Gosewisch brought both runners in with a single to center.
"It felt good to contribute," Gosewisch said.
San Diego tied it in the bottom half of the frame when Rivera hit a two-out, two-run double into the left-field corner off Miley. Maybin and Will Venable had singled ahead of Rivera.
"That was my fault," Gosewisch said of the tying hit. "I called for a slider and we just didn't get it where we wanted it."
Ross allowed three runs, one earned, on seven hits, struck out five and walked one in seven innings. Miley gave up three runs and six hits, struck out four and walked one in seven innings.
In addition to the overturned call in the ninth, Black also challenged a ruling that D-backs shortstop Chris Owings was safe on a grounder with two outs in the eighth. After review, Owings was called out.
NOTES: The Diamondbacks continue their road trip Monday by opening a three-game set at Milwaukee. Mike Bolsinger (1-1, 5.79) is scheduled to start for Arizona against Matt Garza (1-3, 5.00).
