In 2011, Marte was suspended for testing positive for Stanozolol, a performance-enhancing drug.[1][2] Marte represented the Diamondbacks at the 2012 All-Star Futures Game.[3][4] After the 2012 season, the Diamondbacks added him to their 40-man roster. On April 2, 2013, Marte made his major league debut against the St. Louis Cardinals, recording no hits in 3 at-bats. He appeared in 22 games for Arizona in 2013, hitting .186/.271/.256 with no home runs and 4 RBI in 43 at-bats. In 2014, Marte appeared in 44 contests, slashing .170/.221/.292 with 2 home runs and 9 RBI in 106 at-bats.[5]
In 2015, he spent some time up with Los Angeles but would be optioned down to the Salt Lake Bees on June 2.[7]
Baltimore Orioles
On December 14, 2015, Marte signed a minor league deal with the Baltimore Orioles. He did not make the team out of spring training and was sent to the Triple-A Norfolk Tides.[8]
Philadelphia Phillies
On April 18, 2016, Marte was traded from the Orioles for a player to be named later or cash to the Philadelphia Phillies. He was released by the Phillies on May 16.[9]
On April 11, 2019, Marte signed with the New Jersey Jackals of the Can-Am League. He posted a career year, batting .311/.388/.531 and leading the league in home runs (16), RBIs (88), doubles (29), and extra-base hits (45). He helped lead the Jackals to the 2019 Can-Am League Championship Series, where they defeated the Sussex County Miners and won their first ever league crown. Marte was later named the 2019 Can-Am League Player of the Year.[10]
Following the 2020 season, the Can-Am League merged into the Frontier League. Marte later signed a contract extension with the Jackals, but the 2020 season was canceled due to the COVID-19 pandemic.[11][12]
Marte re-signed with the Jackals for the 2021 season.[13] In 38 games, he slashed .281/.348/.493 with 7 home runs and 29 RBIs.
Pericos de Puebla
On July 15, 2021, Marte's contract was purchased by the Pericos de Puebla of the Mexican League.[14] He appeared in 18 games, slashing .275/.311/.507 with 4 home runs and 12 RBIs. Marte was released following the season on October 20.[15]
New Jersey Jackals (second stint)
On March 10, 2022, Marte signed with the New Jersey Jackals of the Frontier League.[16] In 83 games for the club, he batted .295/.354/.533 with 18 home runs, 82 RBI, and 10 stolen bases.
In 2023, Marte played in 94 games for the Jackals, hitting .311/.384/.548 with 21 home runs and 90 RBI. On October 12, 2023, Marte elected free agency.
New York Boulders
On April 20, 2024, Marte signed with the New York Boulders of the Frontier League.[17] In 1 game for New York, he went 2 for 4 with 0 home runs and 0 RBI. On May 11, 2024, Marte was released by the Boulders.
^Associated Press (Spanish Edition)Archived 2013-02-22 at archive.today NUEVA YORK (AP) "NUEVA YORK (AP) - El jardinero dominicano Alfredo Marte, de los Diamondbacks de Arizona, fue suspendido 50 partidos por dar positivo en una prueba antidopaje del programa de ligas menores, informó el miércoles la oficina del comisionado. "