There’s some rest, some rust in Dodgers’ loss to Arizona

Go ahead and order the Floyd Mayweather Jr. fight Saturday. The Dodgers won’t be spraying champagne that night.

After a 4-1 defeat to the Arizona Diamondbacks at Dodger Stadium on Wednesday night, the Dodgers’ magic number to win the National League West remained at six.

Now, the earliest the Dodgers can secure the division title is Sunday against the San Francisco Giants.

BOX SCORE: Diamondbacks 4, Dodgers 1

That was about the only real fallout from the loss, which prevented the Dodgers from sweeping the second-place Diamondbacks. Regardless of what Diamondbacks Manager Kirk Gibson says, this race is over.

The Dodgers lead the Diamondbacks by 12 games. Both teams have 17 games remaining in the regular season.

“It’s nice to say it feels kind of inevitable,” catcher A.J. Ellis said.

Taking that into consideration, Manager Don Mattingly rested four of his everyday position players — center fielder Andre Ethier, left fielder Carl Crawford, second baseman Mark Ellis and third baseman Juan Uribe. First baseman Adrian Gonzalez would also have been on the bench had he not talked his way into the lineup.

The Dodgers’ sizable lead should allow players to recharge their batteries over the last couple of weeks of the season.

This could be important for starting pitcher Hyun-Jin Ryu (13-6), who took the loss. Ryu limited the Diamondbacks to three runs over six innings, but was charged with 10 hits.

The Dodgers have already taken precautions with Ryu, who is part of a five-man rotation for the first time in his career. Ryu used to pitch once a week in his native South Korea. Ryu pitched Wednesday for the first time in 12 days, as he was scratched from his previous scheduled start because of minor stiffness in his back.

Ryu didn’t think he needed any more extra days off.

“Overall, my body is well-rested,” he said through an interpreter. “My body doesn’t feel beat up or anything. I think it’s better if the pitchers stay on rotation.”

Looking even shakier was Brandon League, who started the season as the Dodgers’ closer. League started the seventh inning, but couldn’t complete it. He gave up a lead-off double to Tuffy Gosewisch, after which he issued a one-out walk to A.J. Pollock. A single to left field by Willie Bloomquist loaded the bases.

League was replaced at that point by Brian Wilson and walked off the field to boos. Wilson gave up a run-scoring single to Paul Goldschmidt and the Dodgers were down, 4-0.

In the first year of a three-year, $22.5-million contract, League appears to be a likely candidate to be left off the Dodgers’ playoff roster.

League has given up runs in four of his last seven appearances. His season earned-run average is at 5.47.

“He’s had some good outings and bad outings,” Mattingly said. “I know he hasn’t been as consistent as he’d like to be.”

The Dodgers didn’t score until the seventh inning, when Yasiel Puig blasted a towering solo home run to left field that reduced the deficit to 4-1.

Puig’s 16th home run accounted for the only run charged to Diamondbacks starter Patrick Corbin over 61/3 innings.

Corbin (14-6) gave up eight hits and walked two, but the Dodgers were hitless in six at-bats against him with runners in scoring position.

dylan.hernandez@latimes.com

Twitter: @dylanohernandez