SAN DIEGO (Interstat) — Landen Roupp dominated over six scoreless innings and the San Francisco Giants held off a frantic ninth-inning rally by the San Diego Padres to secure a 3-2 victory on Monday night at PETCO Park, snapping a three-game losing streak to open the season for both clubs.

A crowd of 43,611 watched as Roupp, making his first start of the young 2026 campaign, stifled a potent Padres lineup. The right-hander allowed just two hits, walked one and struck out seven, efficiently navigating traffic and inducing two critical double plays. His performance stood in stark contrast to that of Padres starter Walker Buehler, who took the loss after surrendering three runs on five hits across four innings.

The Giants, who were swept by the New York Yankees to open the season and had scored just one run total in their first three games, broke through in the third inning. Harrison Bader launched a solo home run, his first of the year, into the left-center field seats off Buehler to give San Francisco a 1-0 lead.

They doubled their advantage in the fourth. Matt Chapman singled and Jung Hoo Lee walked before Patrick Bailey drove an RBI single to left, scoring Chapman. Casey Schmitt followed with another single to left, plating Lee to make it 3-0. Schmitt, starting at first base, finished 2-for-3 with an RBI and a double.

From there, the game became a showcase for both bullpens, though the Giants’ arms maintained the upper hand. After Roupp departed, Keaton Winn struck out the side in a perfect seventh inning. Matt Gage worked a clean eighth, setting the stage for what appeared to be a straightforward finish.

The Padres’ offense was dormant, managing only three hits through eight innings against the combination of Roupp, Winn and Gage. San Diego relievers Ron Marinaccio, David Morgan and Wandy Peralta kept the Giants off the board over the final five frames, giving their team a chance.

That chance materialized dramatically in the bottom of the ninth against Giants closer Ryan Walker. Jake Cronenworth worked a leadoff walk. After Fernando Tatis Jr. struck out, Manny Machado grounded out, moving Cronenworth to second.

With two outs and the Giants one out from victory, Jackson Merrill connected on a 1-1 pitch from Walker, sending a two-run home run over the right-field wall. The blast, Merrill’s first of the season, suddenly cut the deficit to 3-2 and injected life into the stunned ballpark.

Walker, however, rebounded immediately. He got Xander Bogaerts to ground out softly to shortstop Willy Adames to end the game, securing his first save of the season and cementing the win for Roupp, now 1-0.

The most important part of the game was unquestionably Roupp’s masterful start. Facing a lineup featuring Tatis, Machado and Bogaerts, he commanded the game from the outset, allowing only two singles. He worked out of his only real jam in the fourth after a leadoff walk to Tatis, inducing a groundout and two routine outs to strand the runner at third. His ability to work deep into the game and suppress the Padres’ scoring opportunities provided the foundation for the victory, especially critical for a Giants team desperate for a win.

The victory improved the Giants’ record to 1-3, while the Padres fell to an identical 1-3. Both teams entered the game having lost their first three series of the season.

According to pregame projections by Interstat, the Padres were favored with a 59% probability to win, and the game simulator predicted a 4-2 San Diego victory. The Giants defied those odds, though the combined five runs fell well under the over/under line of 8.

The two teams will continue their three-game series at PETCO Park on Tuesday. The Giants will look to build momentum before returning home to face the New York Mets, while the Padres aim to even the series before embarking on an East Coast road trip to Boston and Pittsburgh.