The A’s have been one of the more active clubs in the Rule 5 Draft since moving to Oakland in 1968.

It’s not easy to find those diamonds in the rough, but in recent years, the A’s have found players who have been able to stick as regular contributors, such as Mark Canha and Vimael Machín.

Here’s a look at all the players the A’s have acquired in the Major League phase of the Rule 5 Draft since the club has been playing in Oakland.

2020: Indians outfielder Ka’ai Tom; Blue Jays right-hander Dany Jiménez
Tom, 26, split time between Double-A Akron and Triple-A Columbus in 2019, slashing .290/.380/.532 with 23 home runs and 86 RBIs over 132 games. Jiménez is a 26-year-old right-hander who made two appearances with the Giants in '20. He posted a 2.59 ERA with 93 strikeouts over 59 innings between Class A Advanced Dunedin and Double-A New Hampshire while in the Blue Jays' system in '19, and he will enter Spring Training in '21 competing for a spot in the A's bullpen.

• A's take OF Tom, RHP Jiménez in Rule 5 Draft

2019: Cubs infielder Vimael Machín (via trade with Phillies)
Acquired from the Phillies in a Rule 5 Draft day trade, Machín stuck with the A’s in 2019. He provided value as a utility man who received playing time at all four infield spots, filling in at times for shortstop Marcus Semien and third baseman Matt Chapman as they dealt with injuries. He finished the ‘20 campaign with a .534 OPS in 24 games.

2015: Mariners outfielder Jabari Blash
Blash never played a Major League game with the A’s. He is currently playing in Japan with the Tohoku Rakuten Golden Eagles of Nippon Professional Baseball.

• How the Rule 5 Draft works

2014: Marlins first baseman/outfielder Mark Canha (via trade with Rockies)
The Rockies drafted Canha at the request of the A’s and arranged a trade in exchange for reliever Austin House. Canha ended up being arguably the top Rule 5 player in Oakland’s history, as he has emerged as a key piece of clubs that have reached the postseason each of the past three seasons. Canha enjoyed a career year in ‘19, hitting .273 with 26 home runs and 58 RBIs.

2009: Angels right-hander Bobby Cassevah
Cassevah was sold back to the Angels on March 15, 2010.

2008: Giants center fielder Ben Copeland
Copeland played three games in Oakland’s Minor League system before he was returned to San Francisco in May 2009.

• History of the Rule 5 Draft

2007: White Sox right-hander Fernando Hernandez
Hernandez was returned to the White Sox on April 16, 2008, after making three relief appearances with the A's.

2006: White Sox left-hander Jay Marshall
Marshall’s only two Major League seasons came with the A’s in 2007 and ‘09, posting a 7.66 ERA over 61 relief appearances. The left-hander was designated for assignment on Dec. 30, 2009.

2004: Cardinals left-hander Tyler Johnson
Johnson never played a Major League game for the A’s. He was a member of the Cardinals' 2006 World Series championship team.

2002: Reds right-hander Michael Neu; Rangers outfielder Rontrez Johnson
Neu posted a 3.64 ERA in 32 relief appearances for the A’s in 2003. He is now the head baseball coach at the University of California, Berkeley. Johnson did not play a game for Oakland in the Majors.

2001: Mariners third baseman Jason Grabowski
A second-round pick by the Rangers in the 1997 MLB Draft, Grabowski appeared in 12 games for the A’s from 2002-03.

1999: Cubs outfielder Bo Porter
Porter appeared in 17 games for the A’s in 1998. He managed the Astros from 2013-14 and now works for the Nationals as a television broadcaster.

1998: Dodgers outfielder Eric Stuckenschneider
Stuckenschneider played 29 games for Double-A Midland in the A's system.

1997: Cubs right-hander Javier Martinez
Martinez never played a game for the A’s.

1996: Indians right-hander Wilmer Montoya; Tigers second baseman Frank Catalanotto
Neither played a Major League game for the A’s. Catalanotto attended Spring Training with Oakland in 1997, but he was returned to Detroit prior to the start of the regular season. He went on to have a solid 14-year career in the Majors, finishing with a career .291 batting average.

1994: Royals left-hander Chris Eddy
Eddy was returned to the Royals on May 15, 1995, after appearing in six games for the A’s.

1993: Braves right-hander Carlos Reyes
Reyes appeared in 150 games over four seasons with the A’s and posted a 4.93 ERA. The right-hander started Opening Day for Oakland in 1995, against the Blue Jays in Toronto.

1992: Yankees left-hander Kirt Ojala
Ojala never pitched for the A’s, though the knuckleballer was involved in baseball history with the Marlins in 1998, when Barry Bonds took him deep for his 400th career home run.

1990: Reds right-hander Joe Turek; Reds catcher Eddie Taubensee
Neither played a Major League game for the A’s. In 2017, Taubensee was hired as a hitting coach for the Augusta Greenjackets, a Class A affiliate of the Giants.

1989: Red Sox right-hander Reggie Harris
After the 1990 Spring Training lockout, clubs were allowed to keep two extra players for the first month of the season. Harris pitched two seasons for the A’s, posting a 4.06 ERA in 18 games from 1990-91. He went on to play four more seasons with the Red Sox, Phillies, Astros and Brewers.

1987: Angels outfielder Doug Jennings
Jennings spent four seasons with the A’s from 1988-91, hitting .193 over 147 games.

1986: Blue Jays left-hander Cliff Young
Young did not play for the A’s in the Majors.

1984: Twins right-hander Jeff Bettendorf
Bettendorf appeared in three games for the A’s out of the bullpen, allowing five runs over 9 2/3 innings, before he was returned to the Mets.

1982: Padres infielder Luis Quiñones; Dodgers infielder German Rivera
Quiñones played one season with Oakland, batting .190 with four RBIs over 19 games. He later was a member of the 1990 Reds club that defeated the A’s in the World Series. Rivera did not make the club out of Spring Training and was returned to the Dodgers.

1980: Yankees infielder Brian Doyle; Cardinals right-hander Roy Thomas; Yankees right-hander Tom Filer
Doyle appeared in 17 games with the A’s as he battled a hamstring injury, hitting .125 with three RBIs. Thomas pitched one season for Triple-A Tacoma in the A’s system, going 12-8 with a 3.05 ERA over 36 games (18 starts). He was traded to the Mariners in 1982, for Minor Leaguers Tim Hallgren and Rusty McNealy. Filer did not make the A's roster out of Spring Training and was returned to the Yankees.

1977: Cardinals third baseman Taylor Duncan
Duncan batted .257 with two home runs and 37 RBIs over 104 games in 1978, which ended up being the final Major League season of his career.

1971: Twins outfielder Brant Alyea
Alyea had a bit of a weird 1972 campaign. He began the year with the A's and appeared in 10 games before getting traded to the Cardinals. After playing 13 games with St. Louis, Alyea was sent back to Oakland on July 23 and appeared in another 10 games. He’s better known as a trivia answer as the outfielder who was traded that November to the Rangers for reliever Paul Lindblad, who had some solid years out of the bullpen for an A’s dynasty in the early 1970s.

1968: Mets outfielder Tommie Reynolds
Reynolds was signed by the A’s as an amateur free agent in 1963, and spent three seasons with the club during its stint in Kansas City. He enjoyed his best Major League season with the A’s in '69, batting .257 with two home runs and 20 RBIs over 107 games. After retiring, Reynolds served as a bench coach for the A’s from 1989-95, and he followed manager Tony La Russa to St. Louis in 1996 in the same role.

1967: Cardinals right-hander Ed Sprague
Sprague spent two seasons with the A’s from 1968-69, posting a 3.76 ERA over 74 games. Sprague is the father of Ed Sprague Jr., who played 11 seasons in the Major Leagues and now works for the A’s as the director of player development.