SAN DIEGO -- Behind a season-high four home runs off Yu Darvish, two of which came off the bat of Carlos Santana, and Quinn Priester¡¯s solid start, the Pirates stunned the Padres on Monday night at Petco Park, 8-4.

¡°It¡¯s great,¡± said Priester, who recorded his first Major League win. ¡°Definitely want to enjoy it. Really fun. It¡¯s great to have it against a team like that. A lot of really good players. It just goes to show me that I compete.¡±

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After allowing seven runs in his Major League debut a week ago against the Guardians, Priester allowed four runs across 5 1/3 innings against San Diego¡¯s star-laden lineup, three runs coming via two home runs by Ha-Seong Kim.

Priester, 22, is ranked as the Pirates' No. 4 prospect by MLB Pipeline, but he wasn¡¯t the only rookie checking off a ¡°first¡± on Monday night.

In the fourth inning, Liover Peguero, 22, put just enough barrel on Darvish¡¯s sweeper to send a 91.2-mph, 337-foot homer over the left-field fence. Peguero is rated Pittsburgh's No. 7 prospect.

In the seventh inning, catcher Endy Rodr¨ªguez threw out the first runner of his career, firing a perfect 82.3 mph throw to second base to beat Kim's steal attempt. Rodr¨ªguez -- the Bucs' No. 3 prospect -- had a pop time of 1.81 seconds on the throw; for reference, Phillies star J.T. Realmuto leads the Majors with a pop time of, coincidentally, 1.81 on throws to second base.

¡°It¡¯s a blast. It really is,¡± Priester said. ¡°It¡¯s awesome to see. You can¡¯t help but get so excited. I¡¯m in the dugout really trying to stay composed and stay focused, do my job at hand. But when Peggy hits a homer and Santana hits his second. ... It¡¯s electric stuff to be a part of. It¡¯s stuff that I¡¯ve been seeing personally for the last few years. Guys just doing what they do.¡±

While Peguero, Priester and Rodr¨ªguez knocked several accolades off their bucket lists, Santana enjoyed a multi-homer game for the 16th time in his Major League career, with both home runs coming off Darvish. Along with the roundtrippers, Santana slapped an opposite-field double and drew a walk.

Suwinski added to his already career-high total with a solo shot, his 21st home run of the season.

¡°This was supposed to be my day off today,¡± Santana said. ¡°Shelty gave me off today, but something happened to [Ji Man] Choi and he could not play. Shelton asked me today if I could play. I said, ¡®Yes, 100%.¡¯¡±

Added manager Derek Shelton, ¡°We played a complete game. I think there was a lot of great things that happened, starting with Quinn. He gives up a homer to the first hitter and then bounces back and continues to execute pitches. I thought [that's] really encouraging for a young kid in this atmosphere, so very happy."