Three-point scoring leader (2025–2026) Knueppel was selected with the fourth overall pick by the
Charlotte Hornets in the
2025 NBA draft. He led the Hornets to become the
2025 NBA Summer League Champions. For his efforts, he was awarded the Summer League Championship MVP, as he put up 21 points, five rebounds and two assists in an 83–78 win over the
Sacramento Kings. Knueppel made his NBA regular season debut on October 22, recording 11 points and five rebounds in a 136–117 win over the
Brooklyn Nets. Following a string of strong performances including a 30-point game against
Miami Heat, Knueppel was nominated for the Eastern Conference Player of the Week on November 9. He continued his form with a near
triple-double on the same day in a 121–111 loss against the
Los Angeles Lakers, logging 19 points, 10 rebounds and nine assists. On November 14, Knueppel scored a then-career-high 32 points in a 147–134 overtime loss against his hometown team, the
Milwaukee Bucks, including two late three-point buckets to tie the game and send it to overtime. Knueppel received his second nomination for Eastern Conference Player of the Week on November 23 after averaging over 26.5 points, 5.5 rebounds and three assists over four games that week. On February 24, he became the fastest NBA player to make 200 career three point shots in his 58th game, surpassing
Duncan Robinson's record of 69 games. On February 26, in a game against the
Indiana Pacers, Knueppel made his 207th career three-pointer, surpassing
Keegan Murray's previous record (206) for the most three-pointers made in a season by a rookie in NBA history. On April 2, Knueppel made his 261st career three-pointer in a 127–107 win over the
Phoenix Suns, surpassing
Kemba Walker’s previous record for the most three-pointers made in a season in Hornets franchise history. Knueppel finished the regular season with a league-leading 273 made three-pointers, becoming the first rookie to lead the league in three-pointers made in a season in NBA history. He and his teammate,
LaMelo Ball, also became the first duo since
Stephen Curry and
Klay Thompson to each have 270+ three-pointers made in a season. ==Career statistics==