Smith got off to a slow start with the St. Lucie Mets of the High–AFlorida State League (FSL) in 2015. He batted .143 with one double in his first sixteen games, and was 0-for-22 to start May.[10] On May 12, Smith got his first extra base hit since Opening Day with a double against the Tampa Yankees. The 3-for-5 performance signaled a turn around for Smith, who compiled a sixteen-game hitting streak to raise his batting average to .260. For the month of June, Smith batted .352 with a FSL-leading 38 hits and 51 total bases. He also had the second most RBIs (20) and fifth most runs scored (15) to earn FSL Player of the Month honors.[11] The hot hitting continued; Smith ended the season with a .305/.354/.417 slashline, and a career high six home runs. He led the league with 79 RBIs and 33 doubles on his way to being named FSL Player of the Year.[12] After the season, he played for the Salt River Rafters of the Arizona Fall League.[13]
In spring training in 2018, Smith was set to compete with Adrián González to be the Mets' starting first baseman, but he missed most of spring training due to a quadriceps injury. He began the season in Las Vegas, and was promoted on May 11 when Jay Bruce went on the paternity list[23] and demoted when Bruce returned on May 14.[24] Smith was promoted again on June 11 when the Mets released Adrián González.[25] Smith was demoted again on July 20 after Yoenis Céspedes was activated from the disabled list.[26] In 2018 with the Mets he batted .224/.255/.420 in 143 at bats.[27]
During spring training in 2019, Smith resumed using a continuous positive airway pressure machine. Smith had been diagnosed with sleep apnea in 2016 when, during a sleep study, he stopped breathing 90 times per hour—a doctor told him that 30 breathing stoppages per hour would have been considered a severe case. He and Mets general manager Brodie Van Wagenen credited the treatment with making him more alert and productive on the field that spring.[28]
Smith made the opening day roster and split time between first base and left field in what was described as a "breakout season."[29][30][31][32] In late July, he was placed on the injured list (IL) with a stress fracture in his foot.[33] On September 29, Smith returned from the IL in the last game of the Mets regular season. In his first at-bat back, he hit a three-run walk-off home run off Grant Dayton with the Mets down by two runs, leading the team to a 7–6 win in the bottom of the 11th inning over the Atlanta Braves.[34]
2020
In the 2020 season, Smith received more playing time following Yoenis Cespedes' decision to opt out of the shortened season due to COVID-19-related concerns.[35] For the second year in a row, he enjoyed what was described as a "breakout season."[36][37][38][39][40][41] He played in 50 of the team's 60 games batting .316/.377/.616 for the Mets with 21 doubles, 10 home runs and 42 RBIs in only 177 ABs.[42] His .616 slugging percentage set a franchise record, albeit in a shortened season.[43]
Following the 2020 season, Smith was named one of the finalists for the Hank Aaron Award after registering an on-base plus slugging (OPS) of .993, tied for fourth in the National League.[36] Smith finished thirteenth in National League MVP Award voting.[44] Writing for ESPN.com, Sam Miller named Smith the 25th-most entertaining player in baseball, describing him as "one of the most engaging people in the sport."[45]
2021
In 2021, Smith batted .244/.304/.363 with 11 home runs and 48 RBIs in 145 games, while playing primarily left field. His 2021 season was universally considered a disappointing setback. A Sports Illustrated article on the season's biggest disappointments called him "the team's least valuable player in 2021."[46] An article on FanSided described him as looking "like a shell of the player" he was in 2020.[47] An ESPN.com article described Smith and teammate Jeff McNeil as "prime under-performers".[48] Greg Joyce wrote in the New York Post that "Smith’s regression in 2021 clouded his future and role" with the Mets.[49]
In March 2022, he told reporters that he suffered a partially torn labrum in late May or early June 2021 but played through the injury, which affected his swing.[47]
2022
During the 2021–22 offseason, the Mets signed Mark Canha and Starling Marte to play the corner outfield positions and Pete Alonso was again slated to be the everyday first baseman. Smith reportedly was unhappy with his anticipated loss of playing time and the Mets discussed a trade to the San Diego Padres which ultimately fell through before the season began.[50]
Smith was not in the starting lineup on opening day, with the designated hitter role being assigned to J. D. Davis. In the team's first 50 games over the first two months of the season, Smith only started 22.[51]
At the beginning of May when active rosters were reduced in size, Smith was among the candidates for release or demotion, at which point he was batting .167 with a .490 OPS.[52][53] On May 1, 2022, however, Smith went 4-for-4 with a double and three runs batted in.[54] The following day, the Mets made the decision to designate Robinson Canó for assignment and retain Smith on the active roster.[52]
On May 19, 2022, Smith was batting .203 with a .552 OPS when he told Newsday that he wanted to play every day either for the Mets or for "another team out there."[55] Less than two weeks later, on May 31, the Mets announced that Smith was being demoted to Triple-A Syracuse in favor of reliever Adonis Medina.[56] His batting average had fallen to .186 and his OPS to .543.[53]
Smith returned from his stint in Syracuse in late June in what he felt was a better headspace. However, his performance did not improve. After spraining his ankle in mid-July, he was placed on the injured list. The Mets acquired first baseman Daniel Vogelbach and outfielder Tyler Naquin shortly thereafter with the expectation that they would absorb much of the playing time which otherwise would have gone to Smith.[57] During his time on the injured list, the Mets also traded for Darin Ruf to back up Pete Alonso at first base. On August 11, the Mets reinstated Smith from the injured list but optioned him to Triple-A.[58]
Smith said in August that he did not know whether the Mets would want to bring him back, given how poorly he had been performing in 2022.[57] In 2022 with the Mets, he batted .194/.276/.284 with zero home runs in 134 at bats.[59]
On November 18, 2022, the Mets declined to offer Smith a contract and he became a free agent, ending what was described in Newsday as a "tumultuous stay" and on MLB.com as an "uneven tenure" with the Mets.[60][61]
Washington Nationals
On January 4, 2023, Smith signed a one-year, $2 million contract with the Washington Nationals.[62][63] In a career–high 153 games for Washington, he batted .254/.326/.366 with 12 home runs and 46 RBI. On November 14, Smith was designated for assignment after multiple prospects were added to the 40-man roster.[64] He was non-tendered and became a free agent on November 17.
Tampa Bay Rays
On February 19, 2024, Smith signed a minor league contract with the Chicago Cubs.[65] On March 22, Smith was released by the Cubs after triggering the opt–out clause in his contract.[66]
On March 30, 2024, Smith signed a minor league contract with the Tampa Bay Rays.[67] In 21 games for the Triple–A Durham Bulls, he batted .263/.337/.375 with two home runs and 11 RBI. Smith was released by the Rays on May 1 after he triggered the opt–out clause in his contract.[68]
Boston Red Sox
On May 1, 2024, Smith signed a one–year, major league contract with the Boston Red Sox.[69] In 83 games for Boston, he batted .237/.317/.390 with six home runs and 34 RBI. Smith was designated for assignment by the Red Sox after Triston Casas returned from the injured list on August 16.[70] He was released on August 20.[71]
Cincinnati Reds
On August 22, 2024, Smith signed a one-year, major league contract with the Cincinnati Reds.[72] In 9 games for Cincinnati, he went 5–for–26 (.192). Smith was designated for assignment by the Reds on September 2.[73] He cleared waivers and was sent outright to the Triple–A Louisville Bats the next day.[74] Smith subsequently rejected the assignment in lieu of free agency on September 5.[75]
Personal life
Smith's parents, Clabe Smith and Yvette LaFleur, have seven children total. They lived separately while raising Dominic. His mother works in child care and his father is a dog trainer and groomer.[7] Smith grew up a Los Angeles Angels fan.[76]
In 2017, Smith founded a non-profit, Baseball Generations, which supports player development for financially underprivileged players.[77]