Left-hander Eric Lauer and four relievers combined on a five-hit shutout and left fielder Wil Myers drove in both Padres runs with a 456-foot homer and a single Thursday afternoon as San Diego defeated the visiting San Francisco Giants and Madison Bumgarner 2-0 at Petco Park.

The win ended a run of four straight season-opening losses and put the Padres above .500 for the first time since June 9, 2015, when they were 30-29.

The game also marked the major-league debut of shortstop Fernando Tatis Jr., who at 20 years and 85 days, is the youngest Padre to start on Opening Day and the youngest major leaguer to debut on Opening Day since Adrian Beltre in 1999. Tatis is the fifth-youngest Padre ever to appear in a major-league game. Tatis was 2-for-3 in his debut, including a bunt single.

Lauer, who was the second-youngest Opening Day starting pitcher in Padres history, allowed four hits and a walk over six innings. He had three strikeouts. Lauer was 23 years and 298 days old Thursday - three days older than Clay Kirby was in 1971 as the youngest Opening Day starter in Padres history. No Giant reached second base against Lauer.

Myers, who was 2-for-2 with a walk, gave the Padres their first run of the season in the third with a home run drive to right center. The Padres' second run came in the sixth. Second baseman Ian Kinsler opened the inning with a double to the base of the wall off Bumgarner and scored easily on Myers' single to center.

Third baseman Manny Machado, signed to a 10-year, $300 million contract in the offseason, went hitless in three at-bats for the Padres.

Bumgarner gave up two runs on five hits and a walk against nine strikeouts over seven innings. He threw 92 pitches with 66 going for strikes.

Trey Wingenter, Aaron Loup, Craig Stammen and Kirby Yates combined to allow one infield hit over three scoreless innings in relief of Lauer - retiring the last nine Giants in a row. Stammen worked 1 1/3 innings and Yates struck out two of the three hitters he faced in a perfect ninth to earn the save.

--Field Level Media