Phelia played basketball for Mount Notre Dame High School in Reading, Ohio, where she was a four-time Girls Greater Catholic League first-team selection. As a freshman, she started 24 games and averaged 9.7 points and 4.2 rebounds per game. As a sophomore, she averaged 8.9 points and five rebounds per game, and helped lead the Cougars to the Division I state championship in 2019. As a junior, she averaged 13.2 points, 4.5 rebounds, 1.8 steals and 1.1 assists per game and helped lead the Cougars to a perfect 28–0 record and a regional championship before the season was cancelled due to the COVID-19 pandemic. As a senior, she averaged 16.4 points, 3.1 rebounds and 1.8 steals per game and led her team to another state championship in 2021.[1] She finished her high school career on a 72-game winning streak.[2] On April 27, 2020, she verbally committed to play basketball at Michigan.[3] She was ranked No. 28 by ESPN, No. 31 by Blue Star, No. 54 by ASGR and No. 57 by Prospects Nation.[4]
College career
Freshman season
During the 2021–22 season, Phelia appeared in 29 games with 14 starts, and averaged 8.8 points, 2.8 rebounds and 0.8 assists in 22.9 minutes per game. She made her debut on November 9, 2021, in a game against IUPUI and recorded four points and four rebounds.[5] On December 19, 2021, she recorded 12 points, five rebounds, and two steals to help the Wolverines upset No. 5 Baylor, 74–68, in overtime during the Basketball Hall of Fame Women's Showcase. This marked Michigan's first win over a top-five opponent in program history.[6] She was subsequently named the Big Ten's co-freshmen of the week, and the USBWA National Freshman of the Week.[7][8] On February 6, 2022, she recorded a then career-high 24 points, four rebounds and three assists in a game against Iowa.[9] She scored in double figures nine times during the season. Following the season she was named to the Big Ten All-Freshman team.[10][11]
Sophomore season
During the 2022–23 season, Phelia appeared in 26 games with 24 starts, and averaged 16.7 points and 4.2 rebounds in 33.1 minutes per game. Phelia scored in double figures 23 times with eleven 20-point games. On November 16, 2022, she recorded a career-high 25 points, on 11-of-15 shooting, along with three rebounds, two steals and one block in a game against Western Michigan.[12][13] On November 27, 2022, during the final of the Gulf Coast Showcase against Baylor, she recorded 20 points and was named to the Gulf Coast Showcase All-Tournament Team.[14][15] On January 29, 2023, she suffered a leg injury in the final minutes of a game against Minnesota. At the time of her injury, she was the team's best defender and leading scorer.[16] She missed the month of February due to injury and returned on March 2, 2023, during the 2023 Big Ten women's basketball tournament. During the second-round game against Penn State she recorded 13 points and four rebounds.[17][18] Following the season, she was named to the All-Big Ten second team by both the coaches and media.[19][20]
Junior season
During the 2023–24 season, Phelia started 33 games, and averaged 16.8 points, 3.6 rebounds, 2.0 assists and 1.2 steals in 35.0 minutes per game. She led the team in scoring, reached double figures 29 times, with twelve 20-point games and one 30-point game. With 14 points in a game against Maryland on January 24, 2024, Phelia became the 31st player in Michigan program history to surpass 1,000 career points.[21] On February 24, 2024, she recorded her first career double-double, with 16 points, ten rebounds and a career-high seven assists in a game against Northwestern.[22] On March 8, 2024, during the quarterfinals of the 2024 Big Ten women's basketball tournament, she recorded a career-high 30 points in a 69–56 upset victory against No. 12 Indiana. Michigan trailed by as many as 17 points, but Phelia scored 20 points in the second half to help lead the Wolverines to the win.[23] During the Big Ten tournament she averaged 24.6 points and over 37 minutes per game in three tournament games. She was subsequently named to the Big Ten All-Tournament team.[24] During Big Ten conference play, she averaged 17.2 points, while leading the league in minutes played at 36.6 per game. Following the season she was named to the All-Big Ten first team by both the coaches and media.[25][26]