Clayton Kershaw continues his march toward 3,000 strikeouts in Dodgers’ win

It’s hard not to count as the strikeouts go by.

Clayton Kershaw’s first strikeout Friday night came on his “Cooperstown curveball” — a pitch that’s dazzled since its first appearance at Dodger Stadium on May 25, 2008. Two strikeouts on sliders that dove into the dirt like paper airplanes curtailing in the wind brought his chase to single digits.

The milestone is inevitable. Kershaw will all but certainly reach the 3,000-strikeout mark, etching his name on a list that features just 19 other pitchers. But he’ll have to wait a little while longer.

“There’s a few pitches tonight where it clicked,” Kershaw said, moving his earned-run average to 2.49 in June. “It’s just not every one. So hopefully it’ll get there.”

Kershaw struck out four batters against the Nationals, tossing five innings and giving up two solo home runs as the Dodgers took the series opener 6-5.

“It’s really special knowing that he’s approaching 3,000,” said infielder Miguel Rojas, who played third base Friday like he did for Kershaw’s no-hitter in 2014. “Every pitch… every strikeout counts. But for him, I feel like it’s more important to win games, and for him to be 3-0 and with really good numbers overall, I’m happy for him — that he’s healthy, happy and able to contribute.”

Kershaw brought his career strikeout total to 2,992, just eight away from 3,000. Strikeout 3,000 could come Thursday in Colorado or Friday in Kansas City when he’s next expected to toe the mound.

“It’s hard not to appreciate how close he is to the 3,000 mark,” Dodgers manager Dave Roberts said. “My guess is that he just wants to get this thing over with as soon as possible, right? … He wants it over as quick as possible, I’m sure.”

Kershaw still doesn’t feel his sharpest in his seventh start of the season. He walked two and 33 of his 78 pitches were balls. His fastball was more than a tick down from his season average as he flailed with his command early.

And yet, Kershaw battled through five innings.

“I can still get people out,” Kershaw said. “I just want to do it a little bit better.”

Clayton Kershaw delivers in the third inning against the Washington Nationals on Friday night.

(Gina Ferazzi / Los Angeles Times)

If the Dodgers’ previous four-game series against the Padres had the energy and animosity of postseason baseball, then the Nationals coming to town felt like a true mid-June game. Coming off an 11-game losing streak — broken Thursday in Colorado — the Nationals (31-45) fell out of an early lead because of self-inflicted gaffes.

After the Dodgers knotted the score 1-1 when bench coach Danny Lehmann’s first successful challenge (stepping in at manager for the suspended Roberts) brought home a run after Mookie Betts was deemed safe at first on a fielder’s choice, Nationals shortstop CJ Abrams made what looked to be an inning-ending force play.

Abrams dove to his right on an infield single from Andy Pages, stabbed the ball and used his glove to flip to Amed Rosario at second base. The ball never reached Rosario, and Betts hustled home from second base without a throw.

Rojas extended the Dodgers’ lead to 6-2 in the bottom of the sixth when he hit his third home run of the season, a two-run shot, to score Kiké Hernández (two for three, two doubles). When the Nationals threatened in the top of the seventh — with runners on second and third, down by two — Michael Conforto came to the Dodgers’ rescue by making a diving catch to keep his team ahead.

“It’s a long season, and you’re going to receive more opportunities to contribute, and it’s nice to finally get one game like this where you feel part of it,” Rojas said, adding that he was glad to showcase his hitting against a left-hander such as Washington ace MacKenzie Gore.

Abrams homered in the ninth, but Dodgers closer Tanner Scott buckled down to secure his 15th save.

The Dodgers (47-30) will turn to right-hander Dustin May against the Nationals on Saturday as they attempt to clinch their fourth consecutive series. Neither Roberts nor Lehmann was made available to reporters after the game.

Miguel Rojas, left, is gets a hand slap from Dodgers first base coach Chris Woodward after hitting a two-run home run in the sixth inning against the Nationals on Friday night at Dodger Stadium.

(Gina Ferazzi / Los Angeles Times)

Etc.

Right-hander Tyler Glasnow (shoulder inflammation) is set to throw two innings in a rehabilitation assignment with triple-A Oklahoma City on Sunday, while left-hander Blake Snell (shoulder inflammation) is set to throw a bullpen in the next few days, Roberts said.

Roki Sasaki (right shoulder impingement), who stopped throwing after a recent flare up stymied his progression, threw in the outfield Friday afternoon.

“I don’t know if it was 60, 90 feet, with the baseball,” Roberts said of Sasaki, who was moved to the 60-day injured list Friday. “That was a bonus. That was a plus. Chatted with him briefly afterward. He was excited about it.”

On how Sasaki was feeling, Roberts said: “I would say pain-free. Now it’s just getting the build-up. But most important, he’s pain-free.”