Mariano Duncan, coaching third because Larry Bowa had been ejected earlier in the game, waved Furcal around as San Francisco second baseman Ray Durham made a sliding stop of Young's sharp grounder between first and second before throwing late to first base. Furcal never stopped, sliding around the tag of catcher Bengie Molina to beat first baseman Rich Aurilia's throw home.
"The night turned out better than the day," Young said with a smile after getting his first hit and RBI of the year. "Anytime you get a game-winning hit, it's big."
Saito (1-0) struck out the side in the top of the ninth to earn the victory.
"I knew [Furcal] was going to go," Aurilia said. "As soon as I saw Ray bobble the ball, I said, 'I have to get off the bag and get to the ball.' Ray made a great stop, just not good enough right now."
The Dodgers started a season with two victories for the first time since 2000, when they won a pair of 10-4 decisions at Montreal.
Bowa was ejected in the Los Angeles sixth for arguing with third base umpire Ed Montague after being told to stay within the boundaries of the coaching box.
The Dodgers had two on and two outs in a scoreless game when Montague gestured to Bowa. The two came together, the discussion got heated, and Bowa was tossed.
Bowa had to be restrained by manager Joe Torre and bench coach Bob Schaefer before leaving the field. Once in the dugout, the fiery former manager turned over a bucket of Gatorade.
First base coach Duncan moved to third and hitting coach Mike Easler took over at first.
Major League Baseball announced in late February that starting this year, first- and third-base coaches must not cross the lines toward home plate or the field until batted balls pass them. Only then can they take up other spots to guide runners.
"We got a memo and an edict, and they're adamant about the box and stuff," Montague said. "Don't go up in front of the box toward home plate, and don't get any closer to the foul lines. I told Bo in the bottom of the fifth, because he got up close. And that's what caught my eye. And I just told him, 'Bo, you got the memo, we got the memo, and you've got to stay back.' I went over and told Joe in-between innings what I told Bo. And Bo just said, 'I'm going to do it the way I've always been doing it.'
"I said, 'Bo, if you go up, I'm going to have to run you.' And he said, 'Do what you've got to do, and it is what it is.' When he got up in front of it again, I said, 'Bo, I told you once, now get back in the box.' He argued it, and finally I said, 'You're gone.' So I gave him every chance in the book and he defied it.
"It's probably one of the dumbest ejections I've had."
Bowa unleashed a profanity-laced tirade regarding the rule as he left the Dodger Stadium.
"I did it all spring, nobody said a word," he said, still irate a half-hour after the game ended. "I did it yesterday, nobody said a word. It's impossible to coach third and stay in the box with a runner at second."
Schaefer also criticized the rule, but added: "Unfortunately, the umpires are doing what they're told to do."
Bowa expressed anger early in spring training about having to wear a helmet at third.
San Francisco scored two runs off Derek Lowe in the seventh to break a scoreless tie. Durham and Aaron Rowand opened with singles, and Jose Castillo followed with a comebacker that hit Lowe below the left calf and ricocheted to shortstop Furcal for an infield hit to load the bases.
Joe Beimel relieved Lowe, and forced in a run by walking rookie Brian Bocock. Pinch-hitter Eugenio Velez singled one out later to drive in another before Aurilia grounded into an inning-ending double play against Ramon Troncoso.
The Dodgers tied it in the bottom of the inning against Brad Hennessey when Blake DeWitt and pinch hitter Mark Sweeney led off with singles, DeWitt and pinch-runner Chin-lung Hu pulled off a double steal, and Furcal hit a two-run single.
Lowe allowed two runs and nine hits in six-plus innings. He said afterward he was certain he would make his next start.
San Francisco's Matt Cain blanked the Dodgers on three hits in 5 2/3 innings. He walked four, struck out five and threw 113 pitches. The Dodgers loaded the bases off Cain in the sixth before reliever Jack Taschner struck out pinch-hitter Matt Kemp to the threat.
San Francisco's two runs in the seventh snapped a 15-inning scoring drought to start the season. The Giants lost to the Dodgers 5-0 in Monday's opener. ... Torre, beginning his 27th season as a big-league skipper, has been a winner in his debut with each of the five teams he's managed. ... Bocock got his first big-league hit in the second and his first RBI in the seventh. ... Dodgers 3B Andy LaRoche, who tore a ligament in his right thumb March 7, had the cast and three pins removed Tuesday. "They said it's a lot better than they expected," said LaRoche, who's expected to be sidelined until sometime next month.