San Francisco compiled a 60–7 record in Boldt's two seasons on the team. Boldt was selected in the 7th round (50th overall) in the 1957 NBA Draft by the Detroit Pistons following the conclusion of his collegiate career. He never played in the National Basketball Association, however. Boldt then spent some time playing for the Buchan Bakers in the National Industrial Basketball League (NIBL), where in 1958–59 he was a Western Conference All-Star. He was also named the All-Star Game MVP after holding Dick Boushka, the NIBL's leading scorer, to only six points (all coming off free throws). After Boldt quit playing basketball, he spent time in the 1970s working as a scout and assistant coach for the American Basketball Association's Los Angeles Stars. He then began his career in business, and in 1984 he entered the coffee industry. Boldt lived in Arcadia, California with his wife when he died after a period of declining health, on January 30, 2015.