PITTSBURGH (Interstat) — Germán Márquez delivered a commanding bounce-back performance, and the San Diego Padres’ bullpen completed a seven-hit shutout in a 5-0 victory over the Pittsburgh Pirates on a chilly Monday night at PNC Park.

In a game where pregame projections heavily favored the Pirates’ offense, Márquez and three relievers silenced Pittsburgh’s bats, stranding 10 runners and repeatedly extinguishing threats. The win evened the Padres’ record at 5-5, while the Pirates fell to 6-4 in front of an announced crowd of 8,446.

The most critical juncture of the contest arrived in the bottom of the third inning, with the game still scoreless. Pittsburgh had mounted its first serious threat against Márquez. Brandon Lowe singled and Bryan Reynolds followed with another sharp single to right, putting runners on the corners with only one out. The heart of the Pirates’ order was up with a chance to seize early momentum. Márquez, however, bore down. He caught Ryan O’Hearn looking at a called third strike for the second out, then escaped the inning unscathed when Marcell Ozuna flew out harmlessly to right field. That sequence set the tone for the evening, proving the Pirates could get men on but not bring them home.

San Diego’s offense, which managed 11 hits, broke through an inning later against Pirates starter Bubba Chandler. Manny Machado walked and Xander Bogaerts singled, setting the stage for Nick Castellanos. The designated hitter laced a double down the left-field line, scoring Machado for the game’s first run. Castellanos finished 2-for-4 with an RBI.

The Padres expanded their lead with a two-run fifth, chasing Chandler in the process. After a walk and a force out, Fernando Tatis Jr. walked and Jackson Merrill drove a ground-rule double to left-center, scoring one run. Tatis later scored on a quirky fielder’s choice groundout by Machado, giving San Diego a 3-0 advantage. Chandler took the loss, his first of the season, allowing three runs on five hits over 4 1/3 innings.

San Diego added insurance in the sixth on back-to-back doubles from Freddy Fermin and Jake Cronenworth, and again in the eighth when Ramón Laureano doubled home Fermin. Cronenworth was a constant presence, going 2-for-3 with a walk and an RBI.

While Márquez earned the win, his first of the year, his exit after five innings and 96 pitches opened the door for Pittsburgh. The Pirates’ best chance to rally came in the eighth against reliever Ron Marinaccio. He walked the first two batters, bringing the tying run to the plate with no outs. In a game-defining moment, O’Hearn smashed a grounder up the middle, but second baseman Jake Cronenworth initiated a slick 4-6-3 double play. A run scored on the play was nullified, and the threat was decisively neutralized. Marinaccio then got Ozuna to ground out to end the inning.

David Morgan sealed the victory with two perfect innings of relief, striking out one. The Padres’ pitching quartet combined for six strikeouts and issued only three walks.

The victory marked a stark turnaround for Márquez, who was shelled for four runs in three innings in his previous start against San Francisco on March 31. The Padres have now won three of their last four games after taking two of three in Boston over the weekend. The Pirates saw a three-game winning streak snapped following a sweep of Baltimore.

According to Interstat, the result was an upset. Their game simulator had projected a 6-3 Pirates victory, and betting markets had installed Pittsburgh as a 1.5-run favorite. The combined five runs fell well under the over/under line of 8, though the ELO system gave San Diego a 55.6% probability to win.

The two teams continue their three-game series Tuesday night at PNC Park.