Mike Brito, the Dodgers’ scout who helped identify and sign Urias, recalled Tuesday how he was initially impressed by Urias’ 86-mph fastball at age 15. Looking beyond his velocity, his three-pitch mix and his pick-off move, Brito recalled that Urias’ poise was pretty good then, too.• Related: Corey Seager, Yasmani Grandal come up big for Dodgers against Cubs“He looked so calm on the mound,” Brito said. “I think he’s born with that. Fernando (Valenzuela, whom Brito also scouted and signed) was born with that. If he gets nervous, he never shows that he’s nervous.”John Lackey, a 37-year-old right-hander, is starting for the Cubs. He was 23 when he started his first playoff game for the Angels in 2002 — and won, shutting out the Minnesota Twins over seven innings in Game 4 of the AL Championship Series.“Sometimes it can be good to be young,” Lackey said. “You don’t know what you’re getting into. You can just go out there and let your talent take over. And, obviously, he has a lot of that.” Newsroom GuidelinesNews TipsContact UsReport an Error Photos: Dodgers beat Cubs 6-0 in Game 3 of the NLCS, lead series 2-1Dodgers manager Dave Roberts said he has to remind himself that Urias is 20 years old “all the time.” He acknowledged the inconsistency Urias has faced as a rookie, going from Triple-A to the majors and back — also from the rotation to the bullpen and back more than one can count. Already this season, Urias has started games on four, five, seven and 12 days’ rest. Wednesday’s game comes six days after his last appearance, a two-inning relief appearance in Game 5 of the NL Division Series.Photos: Dodgers’ Julio Urias to become youngest starter in MLB playoffs“That’s how it’s been all year,” Urias said through an interpreter. “The decision has been the team’s. The only thing that’s important is to be in the mentality of go out there, do my job, and that’s really what matters.”Brito observed a preternatural calmness in Urias years ago. He said that Kansas City Royals pitcher Joakim Soria had it too — the Dodgers signed him out of Mexico at age 17 — while Yasiel Puig did not.“God gave them that from the beginning,” Brito said. “Sandy Koufax, Willie Mays, Roberto Clemente — they’re born with that. You cannot teach a guy to be patient and be confident. You’re born with that.”Short restClayton Kershaw had barely left the mound at Wrigley Field in Game 2 when the questioning began. Will the Dodgers ask him to come back on short rest again and pitch Game 5 at Dodger Stadium or save him for a potential Game 6 (on five days’ rest)?“Clayton will be ready to pitch when he is asked to pitch,” Roberts said before Game 3 Tuesday.Roberts acknowledged that the Dodgers are more likely to ask Kershaw to come back on short rest if the same team wins Tuesday and Wednesday, making Game 5 an elimination game (one way or the other).“I think that’s fair,” Roberts said of the potential scenario. “After (Wednesday’s) result it will be a little more clear. But still — nothing definitive yet.”Roberts said Kershaw came out of Sunday’s start feeling fine — “arm and back,” Roberts said when questioned. Kershaw has already become the first pitcher to throw at least 19 1/3 innings over four (or more) postseason games in a 10-day period since Orel Hershiser in 1988. There is a danger of asking Kershaw to do too much, Roberts acknowledged.“Yeah — I think it is unfair just to assume anything because he is Clayton,” Roberts said. “So, for us internally, this is something we have to be mindful of and we are.“You still have to put Clayton in the best position to have success and I think at some point you have to think about the overall health. That’s No. 1 for me.”AlsoCubs manager Joe Maddon said that Urias’ pick-off move is “not even close” to being a balk: it is. “I’m certain that the umpiring crew has been made aware of it,” Maddon said. … Urias tied for the National League lead in pickoffs with six, despite throwing only 77 innings in the regular season. “I’ve gotten lucky trying to get runners at first,” he said Monday. … When Josh Reddick stole second base in the fourth inning Tuesday, he became the first Dodger with multiple stolen bases in a postseason game since Steve Sax in 1988. … Tommy Lasorda attended Tuesday’s game. The Hall of Fame manager and current special advisor was released from the hospital Monday. LOS ANGELES >> When Julio Urias was a teenager pitching in Mexico, the Dodgers left each scouting trip with the same question as every organization: would the benign tumor behind his left eye prevent him from succeeding in the major leagues?The answer ultimately proved to be no, and the Dodgers were rewarded for their million-dollar gamble on the young left-hander. Wednesday, Urias will start Game 4 of the National League Championship Series against the Chicago Cubs. At 20 years and 68 days, he’ll be the youngest pitcher ever to start a playoff game.Game 3 recap: Rich Hill wins one for starting pitchers everywhere, shaking off the hookWin or lose, Urias’ poise will be a focal point.