On the day Philadelphia clinched the 1977 National League East, Larry Christenson did more than win the game from the mound: he hit a grand slam and drove in five runs at Wrigley Field, a singular performance preserved in the Philadelphia Phillies record. Christenson, the right-handed pitcher who spent all 11 of his major league seasons with the Phillies and helped them win the 1980 World Series, died on August 28, 2026, at age 72.

Born in Everett, Washington, Christenson attended high school in nearby Marysville. The Phillies selected him in the first round of the 1972 draft with the third overall pick. Less than a year later, on April 13, 1973, the 19-year-old started against the New York Mets at Veterans Stadium and completed a 7-1 victory. The Phillies said that, more than five decades later, he remained the last teenager to win a complete game in his major league debut.

That swift arrival became sustained work. Christenson settled into the rotation for the Phillies teams that won three consecutive division titles from 1976 through 1978. Across those seasons he went 45-28 with a 3.65 earned run average in 616 innings, according to NBC10 Philadelphia. He won a career-high 19 games in 1977, the season that supplied his most improbable combination of pitching and hitting. On September 27, he earned the victory in a 15-9 division-clinching win over the Chicago Cubs while his grand slam helped produce five RBIs.

Christenson later described the 1977 club through its shared execution rather than individual glory. "We were moving people over, stealing bases, bunting guys over, pitching well," he told The Philadelphia Inquirer in a 2019 retrospective. "Everything came together and we just won, won, won." The championship that eluded that team arrived in 1980. Christenson went 5-1 in 14 starts, as NBC10 Philadelphia reported. He was part of the roster that secured the first World Series title in Phillies history, as the club's 1980 championship history recounts. His final season came in 1983, when Philadelphia again won the National League pennant.

The numbers show both the scope of his work and the unusual reach of his bat. MLB's official record credits him with an 83-71 record, a 3.79 ERA, 781 strikeouts and 1,402.2 innings across 243 games, including 220 starts. At the plate he hit 11 home runs and drove in 46 runs. Those 11 homers tied Rick Wise for the most by a pitcher in Phillies history.

Baseball was only his first long career. Christenson entered the financial business after his playing days, eventually co-founding Christenson Investment Partners in Conshohocken in 2004 and serving as its president. In an interview published by the Wharton Sports Analytics and Business Initiative, he summarized the transition plainly: "I studied and learned, stuck with it and made it work." By then he had spent more than 30 years in institutional investing. His home region also honored his athletic career by inducting him into the inaugural class of the Snohomish County Sports Hall of Fame in 2010.

Christenson kept close ties to Philadelphia and supported Phillies Charities and other local nonprofit groups. Former teammate Larry Bowa recalled that Christenson organized people whenever a fundraiser needed support. Mike Schmidt, his teammate and friend for 50 years, said Christenson was the person who kept in touch with everyone and remembered the moments they had shared.

The record still holds the outlines of Christenson's Philadelphia life: a complete game at 19, 19 wins in his finest season, 11 home runs from the pitcher's spot, and a place on the roster that delivered the franchise's first World Series title. Beyond those numbers are the friendships he kept active, the charities he gathered teammates to support, and a second career built with the same patience he brought to an 11-season run with one club.