Josh Rosen

On April 26, 2019, after the Cardinals drafted quarterback Kyler Murray first overall the day prior in the 2019 NFL Draft, Rosen was traded to the Miami Dolphins in exchange for the Dolphins' 2019 second-round pick (previously acquired from the New Orleans Saints) and their fifth-round pick in the 2020 NFL Draft. He was named the backup to Ryan Fitzpatrick to start the 2019 season.

After leading the conference in passing yards per game, Rosen was voted second-team All-Pac-12. He was retroactively credited with a 39-yard pass to Eldridge Massington that was originally ruled a run against Arizona State. It pushed his season total to 3,756 yards passing, breaking Brett Hundley’s single season school record of 3,740 in 2012. Rosen missed the Cactus Bowl after doctors did not clear him to play. On January 3, 2018, Rosen announced his intentions to enter the 2018 NFL Draft. During his time at UCLA, he was nicknamed "Chosen Rosen" and the "Chosen One".

Rosen was selected by the Arizona Cardinals in the first round (10th overall) of the 2018 NFL Draft. He was the fourth quarterback to be selected that year. Following the draft, Rosen made the statement that "nine mistakes" had been made ahead of him in the draft, which has since drawn criticism.

On May 10, 2018, he signed a four-year deal worth $17.84 million with an $11 million signing bonus. During training camp, Rosen won the backup position over Mike Glennon. He made his first regular season appearance in Week 3 of 2018, replacing starter Sam Bradford with 4:31 remaining against the Chicago Bears and the Cardinals trailing 16–14. Arizona lost the game to fall to 0–3, while Rosen completed four of seven for 36 yards and one interception. Entering the game, the Cardinals had scored just six points and ranked last in a number of offensive categories, but jumped out to a 14–0 first quarter lead before six scoreless possessions prompted Arizona coach Steve Wilks to switch to Rosen.

In the 2017 season opener at the Rose Bowl in Pasadena, California, Rosen completed 35-of-59 passes for 491 yards and four touchdowns to rally UCLA to a 45–44 win over Texas A&M, capped off by a touchdown pass to Jordan Lasley on a fake spike play with 48 seconds to go in the game. The Bruins overcame a 34-point deficit, the largest comeback in school history and the second-most ever in the Football Bowl Subdivision (FBS). Texas A&M coach Kevin Sumlin said: "We knew he was smart.... But the thing I was really impressed with was his toughness. We hit him and hit him a lot, and he got better. It's not supposed to work that way … especially in the fourth quarter."

The following week, Rosen was 22-of-25 for 329 yards and a career-high five touchdowns in a 56–23 win over Hawaii. It was the 12th 300-yard game of his career, breaking the school record of 11 set previously by Cade McNown. He reached 2,000 yards for the season in five games, the fastest of any player in UCLA history. After five games, Rosen led the nation in passing yards (2,135), total offense (2,158), and touchdowns (17). On October 4, 2017, CBS Sports published a 2018 mock draft that had the Cleveland Browns selecting Rosen with the No. 1 overall pick. On October 28, in a 44–23 loss against Washington, Rosen was forced out of the game in the third quarter due to a concussion, which he had tried hiding from coaches after being injured on a sack in the game's opening drive. He completed 12 of 21 passes for 93 yards and a touchdown, the first passing score the Huskies had surrendered in the Pac-12 all season. After missing one game, Rosen returned to the lineup and threw for 381 yards with one touchdown and also scored on a one-yard run in a 44–37 win over the Arizona State Sun Devils. In his first matchup against USC quarterback Sam Darnold, Rosen was 32 of 52 passing for 421 yards along with three touchdowns and an interception in a 28–23 loss to the Trojans. The two passers were among the top prospects for the 2018 NFL Draft. In the regular season finale against California, Rosen led the Bruins to a 17–9 lead at the half, but was held out the rest of the game after suffering his second concussion. He suffered three sacks, including one late in the second quarter when he was slow to get up after being thrown to the ground. He finished 13-of-18 passing for 202 yards and two touchdowns, and the Bruins won 30–27 to become bowl-eligible.

In 2016, Rosen was injured in an October 8 loss to Arizona State Sun Devils, when he threw for a then-career high 400 yards. He missed the rest of the season with a shoulder injury. He had surgery on his throwing shoulder to repair soft-tissue damage. UCLA was 3–3 in Rosen's six starts, and he suffered 13 sacks in the shortened season compared to 14 in all of 2015. The Bruins were 1–5 in the final six games and missed bowl eligibility without him.

An economics major, Rosen began taking classes at UCLA in January 2015; he enrolled early so he could take part in spring practice. With three-year starting quarterback Brett Hundley leaving UCLA early for the National Football League (NFL), a large hole was created on the team. Rosen was UCLA's best quarterback during the spring, and he continued to compete during summer camp to be the team's starting quarterback as a true freshman. On August 26, a week after being publicly criticized by head coach Jim Mora, Rosen was named the Bruins' starting quarterback. He beat out Jerry Neuheisel, who had three years of experience in offensive coordinator Noel Mazzone's up-tempo spread offense, which was similar to the offense Rosen ran in high school. The freshman called Neuheisel "selfless" for helping him during the competition.

UCLA entered the 2015 season ranked No. 13 by the Associated Press and No. 14 in the Coaches Poll. In the season opener, Rosen completed 28 of 35 passes for 351 yards and three touchdowns as UCLA defeated Virginia 34–16, and he became the first true freshman to start a season opener at quarterback for UCLA. He was honored as the Walter Camp Offensive Player of the Week. In a 17–9 win over No. 18 Utah, he broke Drew Olson's decade-old school record (199) for consecutive passes without an interception. The victory kept UCLA in contention for the Pac-12 championship entering their regular-season finale against their crosstown rivals, the USC Trojans. However, they lost 40–21 to the Trojans as Rosen turned the ball over three times on a fumble and two interceptions, ending his streak of passes without an interception at 245. He was named the Pac-12 Freshman Offensive Player of the Year and earned Freshman All-American honors from USA Today, Sporting News, and Football Writers Association of America (FWAA). He was also named The Sporting News' Freshman of the Year, Pac-12 Conference Offensive Freshman of the Year (coaches), and Pac-12 Newcomer of the Year (AP).

Rosen attended St. John Bosco High School, a Catholic high school in Bellflower, California, where he had a 4.3 GPA. As a senior, he was named the Los Angeles Times Player of the Year and the Long Beach Press-Telegram Dream Team Player of the Year after passing for 3,186 yards, 29 touchdowns, and four interceptions. He was named a 2014 USA Today High School All-American. He was also named the Southern California Jewish Sports Hall of Fame's Male High School Athlete of the Year. During his playing career, he passed for 11,175 yards and 90 touchdowns.

Rosen was rated by both Rivals.com and Scout.com as a five-star recruit and ranked as the best quarterback in his class. Rivals also ranked him as the best overall recruit. He verbally committed to the University of California, Los Angeles (UCLA) in March 2014, and officially signed in September.

Initially a backup as a rookie, Rosen was named the starter in Week 4 after Arizona began the season 0–3, and the Cardinals ended the season with a league-worst 3–13 record. Holding the first overall pick in the 2019 NFL Draft, Arizona selected quarterback Kyler Murray and traded Rosen to the Dolphins.

On September 24, the Cardinals named Rosen the starting quarterback for Week 4. In his first career start, Rosen passed for 180 yards and a touchdown in the 20–17 loss to the Seattle Seahawks. He helped the Cardinals earn their first win the following week against the San Francisco 49ers, when he completed 10 of 25 passes for 170 yards, including a 75-yard touchdown pass to fellow rookie, receiver Christian Kirk. In Week 7, Rosen had two of his three interceptions returned for touchdowns, lost two fumbles, and was sacked six times in a 45–10 loss to the Denver Broncos on Thursday Night Football. Still ranked among the worst offenses in the league, Arizona fired offensive coordinator Mike McCoy and replaced him with their quarterback coach, Byron Leftwich. In Week 8, Rosen led the Cardinals to an 18–15 comeback win for a season sweep over the 49ers. He threw a career-high 252 passing yards and two touchdowns, including the game-winning score to Kirk with 34 seconds remaining to rally the team from a 15–3 fourth-quarter deficit.

Rosen finished his rookie season with 2,278 passing yards, 11 touchdowns, and 14 interceptions as the Cardinals finished 3–13 (3–10 with Rosen as starter).

The Dolphins started the year 0–2 and were outscored 102–10. After relieving Fitzpatrick in both contests, Rosen was named the starter for Week 3, and threw for 200 yards as the Dolphins lost 31–6 to the Dallas Cowboys. In Week 4 against the Los Angeles Chargers, he threw for 180 yards, one touchdown, and one interception in the 30-10 loss. Rosen's touchdown pass was his first as a member of the Dolphins. Following a Week 5 bye week, Rosen started against the Washington Redskins, but was benched for Fitzpatrick after three quarters while throwing for only 85 yards and two interceptions. The Dolphins lost 17–16. Rosen only appeared in one other game in 2019, serving as Fitzpatrick's backup for the rest of the season.

Joshua Ballinger Lippincott Rosen (born February 10, 1997) is an American football quarterback for the Miami Dolphins of the National Football League (NFL). Rosen was a top-rated recruit coming out of high school, where he was named a 2014 USA Today High School All-American. The first true freshman to ever start at quarterback for the UCLA Bruins in a season opener, he was named a Freshman All-American and was honored as the Pac-12 Conference Freshman Offensive Player of the Year in 2015. As a junior, Rosen was named second-team all-conference in the Pac-12 and broke the UCLA record for single-season yards passing. He was then drafted by the Arizona Cardinals in the first round of the 2018 NFL Draft.

Rosen was born in Torrance, California, to Charles Rosen, an orthopedic spine surgeon, and Liz Lippincott, a former journalist. Rosen's father is Jewish and was a nationally ranked ice skater who almost qualified for the Winter Olympics in the 1970s, and his mother is a Quaker who was the captain of the Princeton lacrosse team. Rosen had a bar mitzvah and identifies as Jewish, saying in 2016: "In retrospect, being Jewish is a big reason why I should have considered UCLA. Just because of how Jewish Hollywood is, and they really want someone to look up to because they just don't have professional athletes." Rosen himself is an atheist. He is a maternal great-great-great grandson of Joseph Wharton, an industrialist and namesake of the Wharton School of Business at the University of Pennsylvania, and thus a descendant of Thomas Cornell, progenitor of the Cornell family. He is named after another ancestor, Joseph Ballinger Lippincott, who founded publishing house J. B. Lippincott & Co.