28Mason Rivera
S
TRANSFER
Cal Poly → UCLA
Cal Poly → UCLACurrent depth chart
SS3Third
Depth relationships
Bio
Mason Rivera is a safety from Tracy, California who spent four seasons at Cal Poly before transferring to UCLA ahead of the 2026 season. At the Mustangs, he appeared in 34 games with 17 starts and recorded 195 tackles, 9.0 tackles for loss, 1.5 sacks, five forced fumbles, and two interceptions. In 2024, Rivera earned Second Team All-Big Sky honors after posting 82 tackles and 6.0 tackles for loss while co-leading the conference with three forced fumbles. During his final season at Cal Poly in 2025, he started all 12 games as a redshirt junior, tallying 74 tackles, 3.0 tackles for loss, one interception, and eight passes defended. Rivera now competes for the Bruins. From Kimball HS / Cal Poly · Tracy, CA.
Player information
Height6'0"Weight190 lbHometownTracy, CAHigh schoolKimball HS / Cal PolyConferenceBig TenPrevious schoolCal PolyTransfer year2026
Production · 2026 · 1 GP
Defense
1
TACKLES
0
TFL
0
SACKS
Coverage & havoc
0
INT
0
PBU
0
QB HUR
Career path
KIMBALL HS / CAL POLYTracy, CA
CAL POLY2022 – 2025
UCLA2026 — present
Transferred in