(SportsNetwork.com) - The Los Angeles Dodgers will try to even their three- game series with the San Diego Padres on Saturday evening behind Josh Beckett, who hasn't been able to rack up a lot of wins since his no-hitter.

Beckett has lost three of his four starts since shutting down the Philadelphia Phillies in historic fashion on May 25, though the Dodgers haven't helped him a whole lot either. Los Angeles has plated just five runs in the three setbacks, with Beckett falling to 4-4 on the year with a 2.49 earned run average.

The right-hander got three runs of support on Sunday, but it wasn't enough in a 6-3 loss to Arizona. Beckett was charged with four runs -- three earned -- over seven innings, striking out six without walking a batter.

"We gave some outs away," Dodgers manager Don Mattingly said. "It's a tough (loss)."

Beckett, 34, has good career numbers versus the Padres, going 5-2 with a 2.41 ERA in eight starts.

Like Beckett, tonight's starter for San Diego, Tyson Ross, hasn't been getting a lot of run support. However, unlike his counterpart, the righty has had his own struggles on the mound.

While San Diego has scored just one run in his past three outings, Ross has allowed 10 earned runs over that span. He did not get a decision versus Philadelphia on June 11 despite seven scoreless innings, but then struggled with his command in a 5-1 loss in Seattle on Monday.

Ross was charged with five runs on seven hits and a career-high seven walks, striking out six in 5 2/3 innings while giving up two homers.

The 27-year-old fell to 6-6 with a 3.27 ERA on the year and has never beaten the Dodgers, going 0-2 with a 3.60 ERA in five games (3 starts). That includes a loss on April 2 in San Diego, with Ross giving up three earned runs over five frames.

The Padres rallied for three runs in the ninth inning of last night's opener to secure a 6-5 win and a third straight victory.

Alexi Amarista scored San Diego's first run of the frame on Carlos Quentin's double off Dodgers closer Kenley Jansen, then pinch-runner Andrew Cashner tied the game by crossing the plate on Will Venable's double.

After moving to third base on a Rene Rivera sacrifice bunt, Venable scored easily on Everth Cabrera's sacrifice fly to right against Jansen, who suffered his third blown save of the season.

"They just kept hitting him. You can't say they were flares or anything. They hit a ball down the line for a double, they hit a ball in the gap. Even the last ball is hit good. They seemed to square everything up tonight," Mattingly said.

Seth Smith belted two solo homers for the Padres, who were forced to make third baseman Chase Headley a scratch from Friday's lineup due to pain caused by a herniated disc.

Yasiel Puig knocked in two runs with a single in the fifth for Los Angeles before leaving in the eighth with a mild left hip muscle strain. He is day-to- day.

The Dodgers were coming off a three-game sweep of the Colorado Rockies, punctuated by Clayton Kershaw's no-hitter in Wednesday's finale.

Los Angeles did win two of three games at San Diego to start the season and is 9-3 in the previous 12 matchups in the series.