The first of the prized Boston Red Sox prospects from Class A Salem is coming to Portland.

Center fielder Andrew Benintendi has been promoted to the Portland Sea Dogs, the Salem Red Sox announced Sunday night through Twitter.

Benintendi, 21, was Boston’s first-round draft pick (seventh overall) last year, out of the University of Arkansas. He received a $3.6-million signing bonus.

In 34 games with Salem, Benintendi batted .341 with a .413 on-base percentage and a .563 slugging percentage. He hit one home run, along with 13 doubles and seven triples. He also recorded 32 RBI, had a 23-game hitting streak, and stole eight bases in 10 attempts.

One reason for Benintendi’s quick promotion is his advanced approach at the plate. He struck out only nine times in 135 at-bats while walking 15 times.

Listed at 5-foot-10, 170 pounds, Benintendi still shows power. He hit .313 with 11 home runs in 54 pro games last year at lower levels, and hit 20 home runs his final season at Arkansas, when he was chosen as college player of the year. He bats left-handed.

The only Red Sox prospect to arrive in Portland quicker than Benintendi was Dustin Pedroia, who began his first full pro season with the Sea Dogs in 2005.

Other touted prospects who reached in Portland during their first full professional season, played more than 60 games in Class A before their promotion. They include Jacoby Ellsbury (after 61 games in 2006), Sam Travis (after 66 games in 2015) and Jackie Bradley Jr. (after 67 games in 2012).

Benintendi is expected to be in Portland on Monday. It is not known if he will be in the lineup for the 6 p.m. game against the New Hampshire Fisher Cats at Hadlock Field.

Benintendi’s arrival will not be the only promotion from Salem this year. Among the other top prospects playing for Salem are shortstop Mauricio Dubon (.338 average) and second baseman Yoan Moncada (.328, 24 steals).