WASHINGTON — Top pitching prospect Jose Fernandez was among seven players added to the Miami Marlins’ roster ahead of Monday’s opener at the Nationals and is scheduled to make his major league debut April 7 against the Mets in New York.

The unexpected addition of Fernandez was made Sunday following injuries to right-handers Nathan Eovaldi and Henderson Alvarez. The pair, who had been in the Marlins’ projected rotation, were put on the 15-day disabled list because of shoulder inflammation, Eovaldi retroactive to March 24 and Alvarez to March 27.

Miami also added right-handers John Maine and Kevin Slowey to its 40-man roster along with reliever Chad Qualls, first baseman Casey Kotchman, outfielder Austin Kearns and infielder Chris Valaika. Alex Sanabia was recalled from the minors and will join the rotation along with Slowey.

Fernandez was selected by the Marlins with the 14th overall pick in the 2011 amateur draft and hasn’t pitched above Class A. The 20-year-old was part of the Marlins’ spring training camp this year, then was assigned to Double-A Jacksonville. A 6-foot-4, 220-pound right-hander, Fernandez came to the United States by boat as a Cuban refugee in 2008. He was 14-1 with a 1.75 ERA in 25 games in the minor leagues last year.

Angels

Madson, Taylor on DL: In Anaheim, Calif., the Los Angeles Angels set their opening day roster and 40-man roster after Saturday night’s exhibition victory over the Dodgers, placing right-hander pitcher Ryan Madson and lefty Andrew Taylor on the 15-day disabled list retroactive to March 22.

The club also selected the contracts of right-hander Mark Lowe, infielder Brendan Harris and outfielder J.B. Shuck.

Braves

Venters on DL; Gattis added to roster: In Atlanta, the Braves have placed left-hander Jonny Venters on the 15-day with a sprained elbow and purchased the contract of catcher Evan Gattis as they set their opening day roster.

Gattis will share time with Gerald Laird as the Braves await the return of catcher Brian McCann, who is recovering from shoulder surgery. McCann is expected to return by the end of April. Gattis hit six homers this spring.

Venters, who felt tightness in his elbow in his last spring training game, will be examined by Dr. James Andrews on Monday. Andrews performed ligament-replacement surgery on Venters’ elbow in 2005.

Mariners

Bay makes roster; Wells odd man out: The Seattle Mariners have designated outfielder Casper Wells for assignment and kept Jason Bay on the opening day roster as the club’s fifth outfielder.

Wells hit .189 with two home runs and 14 RBIs in 16 spring training games. Bay, who signed a $1 million, one-year contract in December, batted .321 with two homers and six RBIs in 18 exhibition games.

Rays

Scott on DL: In St. Petersburg, Fla., the Tampa Bay Rays placed designated hitter Luke Scott on the 15-day disabled list with a strained right calf and designated catchers Stephen Vogt and Robinson Chirinos for assignment in moves that helped the team set the opening day roster.

The club also announced Sunday that it purchased the contracts of right-handed reliever Jamey Wright and first baseman Shelley Duncan, who signed minor league deals this winter.

Royals

Tejada added to roster; Duffy on DL: The Kansas City Royals have added former AL MVP Miguel Tejada to their opening day roster and placed left-hander Danny Duffy on the 15-day disabled list.

Tejada, a six-time all-star last played in the major leagues in 2011 with the San Francisco Giants. He spent last season with Baltimore’s Triple-A team at Norfolk, batting .259 with no home runs and 18 RBIs in 135 at-bats before he was released June 25.

Duffy made six starts last season and is recuperating from Tommy John surgery on his elbow. He is expected to return around midseason.