Out of Santa Monica High School, Mathews was a top recruit out of high school for California.[1] He had a solid freshman campaign under coach Mike Montgomery and had a 32-point game versus Oregon. As a sophomore, Mathews averaged 13.6 points per game. He posted 13.5 points per game as a junior and earned his degree after taking six classes in 12 weeks.[2] He opted to transfer to Gonzaga for his final collegiate season because he did not have a great relationship with Golden Bears coach Cuonzo Martin.[3]
Mathews endured a brief shooting slump in February 2017 but rebounded to make three 3-pointers and score 15 points in a win over San Diego.[4] Mathews hit the go-ahead 3-pointer with under a minute to go in the Sweet 16 win over West Virginia and finished with 13 points.[5] As a senior at Gonzaga, Mathews 10.6 points, 3.3 rebounds and 1.5 assists per game in helping the Bulldogs reach the National Championship game.[6] He hit a team-high 85 3-pointers.[7]
Professional career
After going undrafted in the 2017 NBA draft, Mathews joined the New Orleans Pelicans in the NBA Summer League.[8] On September 21, 2017, Mathews signed with the Atlanta Hawks.[6] He was released on October 13 as one of the team's final preseason roster cuts.[9] Mathews joined the Erie BayHawks of the NBA G League.[10] He came off the bench for a team-high 20 points in a 115–96 loss to the Fort Wayne Mad Ants on March 17, 2018.[11] Mathews averaged 8.8 points in 48 games in his rookie season, shooting 38.4 percent from the field. He signed with the Los Angeles Clippers in the 2018 Summer League.[12]