MILWAUKEE — Jacob Misiorowski made his 30th start of the season Sunday, allowing two hits over 5⅓ scoreless innings as the Milwaukee Brewers beat the St. Louis Cardinals 6-4 and closed the regular season with a franchise-record 103 wins. For the 24-year-old right-hander, the milestone that mattered most was not one of his eye-catching pitching statistics. It was reaching 30 starts in his first full major-league season. “Honestly, being able to go in week in and week out and perform for my teammates, I think that’s the biggest thing,” Misiorowski said Sunday. He finished 16-5 with a 1.80 ERA and 252 strikeouts, while holding opposing hitters to a .157 average. He led the majors in all three categories, a combination achieved since 1950 by only Sandy Koufax in 1965, J.R. Richard in 1976 and Mike Scott in 1986, according to the Elias Sports Bureau. Misiorowski’s opponents’ batting average was the lowest for an American or National League pitcher with at least 100 innings since 1900, surpassing Pedro Martinez’s .167 mark in 2000. His 0.80 WHIP — walks and hits allowed per inning pitched — was the lowest in a full regulation season for a pitcher with at least 150 innings since Martinez posted 0.73 in 2000. He is the first pitcher in Brewers history to lead the league in both ERA and strikeouts in the same season. His 252 strikeouts rank second on Milwaukee’s single-season list, behind Ben Sheets’ 264 in 2004. Misiorowski is considered a Cy Young Award contender; three Brewers have won the honor: Rollie Fingers in 1981, Pete Vukovich in 1982 and Corbin Burnes in 2021. Milwaukee’s 103-59 record is its best ever, and the club has home-field advantage throughout the playoffs for a second consecutive year. The Brewers are making their eighth postseason appearance in nine seasons, but have never won a World Series. Their only trip to the Fall Classic came in 1982. Misiorowski pitched in relief during last year’s postseason, recording a 1.50 ERA and 16 strikeouts in 12 innings. Milwaukee beat the Chicago Cubs in the Division Series before being swept by the Los Angeles Dodgers in the National League Championship Series. This October, Misiorowski is expected to start Game 1 of the Division Series on Saturday, with Milwaukee set to face either the Cubs or the San Diego Padres. He said his focus had already shifted to the postseason. “That flipped a while back,” he said. “We’re ready to go.”