PHOENIX -- The A's led most of the way Sunday afternoon at Phoenix Municipal Stadium, but the D-backs mounted a three-run rally off of A's reliever Brian Fuentes to claim a 4-2 victory.

Shortstop Chris Owings got the ninth-inning rally started with a one-out double. That was followed quickly by a walk to catcher P.J. Pilittere, and then a double by right fielder David Winfree that chased them both home with the tying and go-ahead runs. Second baseman David Nick then provided some insurance with an RBI triple to right field.

Until that point, it was a relatively calm affair. Lefty Dallas Braden's six solid innings, along with a pair of timely hits, guided the A's to a 2-1 lead, and he was in line for the win.

It marked Braden's best statistical performance of the spring. The A's southpaw scattered nine hits and walked two on the day, after entering the contest having given up 12 earned runs over a combined 10 2/3 innings in his previous four starts.

The A's quickly jumped out to a 1-0 lead in the first against Arizona starter Barry Enright, when Eric Sogard led off with a base hit. He came around to score on an RBI single from Kevin Kouzmanoff. Sogard, vying for the club's last roster spot as a backup infielder, was bumped up to the leadoff spot after Coco Crisp was scratched from the lineup, and he scored Oakland's second run in the fifth when he tripled and then scored on Kurt Suzuki's RBI base hit.

Enright, battling for one of the D-back's final two rotation spots, went five innings, giving up two runs on four hits, with two walks and four strikeouts.

Also in the game, right fielder Justin Upton exited in the fifth following Sogard's triple. He appeared to slip while chasing the ball in the outfield corner. He was replaced in the game by David Winfree. Upton had gone 2-for-3 before exiting the game.

Upton jammed his right knee, but said he does not believe the injury is anything serious.

"It's going to be sore, but I don't think it's anything that's going to be too crazy," Upton said. "I didn't hear any cracks, pops or anything like that."

The injury occurred when Upton raced into the right-field corner to field Sogard's triple.

Up next for the D-backs: The D-backs return to Salt River Fields at Talking Stick on Monday to play a night game against the Dodgers. Ian Kennedy will get the start for the D-backs, and the right-hander is looking to bounce back after a pair of subpar outings. Kennedy was named the team's Opening Day starter, but has yet to pitch into the fifth inning yet this spring.

Up next for the A's: Lefty Brett Anderson gets the start in Glendale, Ariz., for a Monday meeting with the host Dodgers beginning at 1:05 p.m. PT at Camelback Ranch. The A's southpaw, making his fifth Cactus League appearance, has given up seven earned runs and struck out 15 in 14 1/3 innings this spring. Also scheduled to take the mound are right-handed relievers Brad Ziegler and Michael Wuertz.