[1][2][3] The Dodgers selected Seager in the first round of the 2012 MLB draft, and he made his major league debut in 2015.

He was the 2016 National League (NL) Rookie of the Year and was an MLB All-Star in his first two full seasons in the majors.

After seven years with the Dodgers, Seager entered free agency and signed a 10-year contract worth $325 million with the Rangers.

[7] Seager began his professional career with the Ogden Raptors of the Pioneer League, where he had a .309 batting average in 46 games in 2012.

[9] In 2014, Seager hit .352 with 18 home runs and 70 RBI for the Quakes and was selected to the mid-season California League All-Star team.

[14] On September 26, the Dodgers announced that Seager was the co-winner, along with Joc Pederson, of the organization's "Minor League Player of the Year" award.

[18][19] The Dodgers assigned Seager to their new Double–A affiliate, the Tulsa Drillers of the Texas League, to start the 2015 season.

[22] In a game on May 28 against the Salt Lake Bees, Seager had six hits in six at-bats, including a home run, and six RBI.

[26] On September 3, 2015, the Dodgers called Seager up to the majors,[27] and he made his debut that night as the starting shortstop against the San Diego Padres.

[29] On September 12, 2015, against the Arizona Diamondbacks, Seager was 4-for-4 with his first MLB home run (off Josh Collmenter), a walk and a stolen base, making him the third-youngest player in history to accomplish that feat (after Ken Griffey Jr. and Orlando Cepeda).

[30] On September 21, Seager passed Bill Russell by reaching base safely in his first 16 major league starts, a new Dodger record.

[42] On August 27, he passed Wright to take sole possession of the record, with a first inning homer off of Jason Hammel of the Chicago Cubs.

[47] Baseball America selected him as their 2016 Rookie of the Year,[48] as did The Sporting News[49] and the Players Choice Awards.

[32] On April 30, Seager was diagnosed with a strain in the ulnar collateral ligament of his right elbow, requiring Tommy John surgery, which caused him to miss the remainder of the 2018 season.

He was activated from the injured list on July 10, and two days later began the second half of the season batting at the top of the order against the Red Sox.

[67] Seager finished the regular season batting .272/.335/.483 with 19 home runs, and despite missing one month of play, he set new career highs with 44 doubles (tied for the NL lead) and 87 RBIs.

[69] The emotions of and background leading up to the Seager brothers' August 17 encounter was published in a mini-documentary on the Dodgers' official YouTube channel.

[71] Among all qualified hitters on the Dodgers, he led the team in batting average, slugging percentage, hits (65), doubles (12), and RBIs (41).

Seager attributed much of his hitting success during the season to being fully healthy,[72] as partly evidenced by his career-best 93.2 miles per hour (150.0 km/h) Statcast average exit velocity.

[77] On September 26, 2021, Seager hit his 100th career home run off of Humberto Mejía of the Arizona Diamondbacks.

[79] The contract was the largest in Rangers franchise history, surpassing Alex Rodriguez's record $252 million deal set in 2000.

In 2023, Seager batted .327/.390/.623 with 33 home runs and a career-high 96 RBI, leading the AL in doubles (42) and percentage of balls hard-hit (48.4%).

[83] In the 2023 World Series, Seager hit .286 with three home runs and six RBI to help the Rangers defeat the Arizona Diamondbacks in five games.