Signed with the New York Mets as an international free agent on July 2, 2018... Álvarez was ranked as MLB Pipeline’s No. 13 international prospect during the 2018-19 signing period, and the Venezuela native signed with the Mets for $2.7 million... was ranked as the best catcher and the No. 2 overall prospect in baseball by MLB.com as of July 2022... became MLB.com's No. 1 overall prospect in August 2022... selected to the All-Star Futures Game in 2021 while with High-A Brooklyn and again in 2022 while with Triple-A Syracuse... voted a Mets Organization All-Star by MiLB.com in 2021... missed three weeks in September 2022 due to a right ankle injury that did not require surgery... called up by the Mets on Sept. 30, 2022 for his Major League debut at Atlanta following the end of Triple-A Syracuse's International League season... was ranked as the No. 1 overall prospect in baseball by MLB.com at the end of the 2022 season and the time of his Major League debut... Álvarez hit .260/.374/.511 with 27 home runs and 78 RBIs over 112 games split between Double-A Binghamton and Syracuse in 2022 before joining New York with six games remaining on the Mets' regular season schedule... catcher hit .234 in 45 Triple-A games (37-for-158) with nine homers and 31 RBIs for Syracuse... added six doubles and scored 31 runs in that span... at Binghamton, he hit .277 with 18 homers and 47 RBIs in 67 games (70-for-253) while drawing 36 walks... his 15 homers with Binghamton ranked him No. 15 in the Eastern League despite only spending half the season there... entered the 2023 season ranked by MLB.com as the Mets' No. 1 prospect and the No. 3 overall prospect in baseball.
2022
Made his Major League debut with the Mets on Sept. 30, 2022 at Atlanta, going 0-for-4... appeared in four more games with the Mets in October -- he collected his first hit and home run in the Majors on Oct. 4 at Philadelphia...went 2-for-12 with a double and a homer in his first taste of the Majors... spent most of the season at Double-A Binghamton (67 games) and Triple-A Syracuse (45 games), hitting a combined .260 with 27 homers, 78 RBIs, 22 doubles and 74 runs in 411 at-bats... finished the season as the No. 1 prospect in baseball according to MLB Pipeline rankings.
2021
Was named the organization's 2021 Minor League Position Player of the Year...Split the season between St. Lucie (A) and Brooklyn (A+)...Was the youngest regular anywhere in High-A (age 19)...Began the season with St. Lucie where he hit .417 (20-48) with 12 runs, five extra-base hits, and two home runs in 15 games, then set a franchise-record with 22 home runs in 84 games with Brooklyn...Led Mets minor leaguers in RBI (70), extra-base hits (43), and slugging (.538)...Was second with 24 home runs...Socked a pinch-hit home run in the SiriusXM All-Star Futures Game at Coors Field.
2020
Spent part of the season at the New York Mets Alternate Training Site in Brooklyn, NY.
2019
Split his first professional season between Rookie-level Kingsport and Rookie-level Gulf Coast...Combined to hit .312/.407/.510 with 32 runs, 10 doubles, seven home runs, 26 RBI and 21 walks in 42 games between the two levels...Began the season with the GCL Mets where he reached base safely in all seven games...He hit .462 (12-26) with eight runs, two home runs, 10 RBI and four walks in seven games...Went on a 16-game hitting streak with Kingsport from July 8 - Aug. 5, batting .417 (25-60) in that span with 15 runs, three doubles, two home runs, seven RBI, four walks and a 1.036 OPS...Socked two home runs on Aug. 24 as a member of Kingsport against Bluefield, going 2-4 with two runs and two RBIs.