[6] He played for the football team, throwing for 7,687 yards and 93 touchdowns with 18 interceptions in three varsity seasons at Marin Catholic, completing 477-of-767 passes (62.2%), equal to a passer rating of 125.5, for teams that combined to post a 39–4 overall record and 21–0 Marin County Athletic League mark on their way to an appearance in the state title game, one North Coast Section crown, three NCS playoff appearances, and three MCAL championships.

[23] On November 14, 2015, Goff threw for 453 yards and six touchdowns in a 54–24 victory over Oregon State, earning Pac-12 Offensive Player of the Week honors for the first time.

[40][41][42] Despite not excelling at the physical tests at the NFL Scouting Combine, Goff still improved his draft stock with a strong showing in the positional drills.

[57] In the next game against the Seattle Seahawks, Goff notably struggled, as he had two interceptions, no touchdowns, 288 yards, and a 46.8 completion percentage for a 48.9 passer rating as the Rams lost 10–16.

[77] During a Week 4 38–31 victory over the against the Minnesota Vikings, Goff completed 26 of 33 passes for a career-high 465 yards and five touchdowns, finishing with a perfect quarterback rating of 158.3.

[81] Three weeks later against the Chicago Bears, Goff threw for 180 yards, no touchdowns, and a career-high four interceptions as the Rams lost on the road by a score of 15–6.

[86] The Rams finished the 2018 season atop the NFC West with a 13–3 record and made the playoffs with a first-round bye as the #2 seed.

[89] Although the team was aided by a controversial no-call by the officials, Goff was also clutch in several key plays, and became the youngest quarterback to win an NFC Championship Game.

The game was largely dominated by both sides' defenses, and Goff completed 19 of 38 passes for 229 yards and threw a costly interception to Stephon Gilmore late in the fourth quarter of the 13–3 loss.

[98][99][100] During a Week 4 55–40 loss to the Tampa Bay Buccaneers, Goff finished with a career-high 517 passing yards, two touchdowns, and three interceptions.

[101] He tied the NFL record for completions in a regular-season game with 45 equalling Drew Bledsoe's Week 11 performance against the Vikings in 1994.

[109] Three weeks later during a 49ers rematch on Saturday Night Football, Goff finished with 323 passing yards, two touchdowns, and an interception as the Rams narrowly lost on the road by a score of 34–31 and were eliminated from playoff contention.

[115] During the season-opener against the Cowboys, the first ever football game to be played at SoFi Stadium, Goff finished with 275 passing yards and an interception as the Rams won 20–17.

[116] In the next game against the Eagles, Goff threw for 267 yards and three touchdowns to tight end Tyler Higbee during the 37–19 road victory.

[117] The following week against the Buffalo Bills, Goff finished with 321 passing yards, two touchdowns, and an interception as the Rams narrowly lost on the road by a score of 35–32.

[121] During Week 16 against the Seahawks, Goff threw for 234 yards and an interception before leaving the eventual 20–9 road loss with a broken thumb in the third quarter.

[126] In the Wild Card Round against the Seahawks, Goff was cleared to play but began the game as the backup to John Wolford.

[130][131] In the Divisional Round against the Green Bay Packers, Goff completed 21 of 27 passes for 174 yards and a touchdown in the 32–18 road loss.

[136] During a Week 7 matchup against his former team, the Rams, Goff threw for 268 yards, a touchdown, and two interceptions as the Lions lost on the road by a score of 28–19.

[154] In the NFL Kickoff Game against the Kansas City Chiefs, Goff completed 22-of-35 passes for 253 yards and a touchdown in a 21–20 upset victory over the defending champions.

Goff became one of five quarterbacks in NFL postseason history to produce a game with 275+ passing yards, a completion percentage of 80.0%+ and a passer rating of 120.0+.

[167] In the Divisional Round against the Buccaneers, Goff completed 30-of-43 passes for 287 yards and directed touchdown drives on three consecutive possessions in the second half en route to a 31–23 victory, moving the Lions one win away from their first Super Bowl appearance in franchise history.

[170] Goff opened the season on September 8 with a 26–20 overtime win against the Rams, a rematch of the previous year's Wild Card game.

[171] After a two-interception loss to the Buccaneers in Week 2, Goff bounced back with a 20–13 victory over the Cardinals, completing his first 14 passes and throwing two touchdowns.

[173][174] Following a bye, Goff led the Lions to a 47–9 road win over the Cowboys, passing for 315 yards, three touchdowns and becoming the second quarterback to finish with a passer rating of 150+ in consecutive starts, joining Drew Brees in 2018.

[183] After 300-yard, three touchdown performances against the Bears and 49ers, Goff concluded the season with a 31–9 win over the Vikings in Week 18, clinching the NFC’s top seed, back-to-back division titles, and a franchise-best 15–2 record.

[184] Goff finished the regular season with 4,629 passing yards, 37 touchdowns, 12 interceptions, a passer rating of 111.8, and a completion percentage of 72.4%.

[188] The "Ja-red-Goff" chant has also been heard at other sports events and venues all over Michigan, and on a smaller level in the wider United States.

[216] Partnering with his clothing line "JG16" and Merit, Goff founded the Detroit Foundation, which donates profits to funding university scholarships.

[219] Harper is the co-winner of the 2021 Sports Illustrated Swim Search for new models and was named co–rookie of the year following her 2022 appearance in the swimsuit issue.