Originally selected by the San Francisco Giants in the 3rd round of the 1994 First Year Player Draft.

2009

Had two stints with the O's: June 5-21 (contract selected from Triple-A Norfolk) and was recalled on September 1...Did not allow an earned run in 17 of his 20 appearances (allowed one ER in each of his other three)...Allowed only one of 17 inherited runners to score (94.1% strand rate)...Allowed one ER over 6.2 IP in his final 12 appearances, lowering season ERA from 3.38 to 2.25...Held lefties to a .269 average, allowing only one extra-base hit (double) in 30 plate appearances...13 of his 20 appearances were for less than one inning...Pitched a season-high 1.0 inning seven times...Did not allow a hit in 10 of his 16 appearances after being recalled on September 1, pitching to a 1.86 ERA (9.2IP, 2ER)...Successfully retired the first batter he faced in 15 of 20 appearances...Did not allow a hit (0-for-4 with two walks) with runners in scoring position and two outs...Allowed an opponents average of .176 (3-17) on the road and .346 (9-26) at Camden Yards

2008

Made his ML debut July 8 @TOR after having his contract selected from Norfolk earlier that day...Allowed a hit and hit a batter in his debut without recording an out...Recorded his first ML win vs. CWS in a game that was suspended on April 28 in Chicago (while Castillo was with Triple-A Norfolk) and finished August 25 at Camden Yards...The suspended game makes it appear that Castillo's major league debut occurred on April 28, when in fact it took place July 8, yet he is credited with a win for the game on April 28...Worked a career-high 2.1 IP August 6 @LAA...Struck out a career-best three batters on July 30 @ NYY, August 11 @CLE and September 23 vs. TB...Fanned Kevin Cash on July 12 at Fenway Park for his 1st ML strikeout... Left-handed batters hit .256 (10-39) and right-handed batters hit .262 (17-65) against Castillo, while opponents hit just .189 (10-53) against him in Baltimore and .333 (17-51) on the road...Had a 2.35 ERA in day games and a 4.42 ERA in night games.

2007

Went 2-0 with 4 saves and a 2.31 ERA (35.0IP, 9ER) in 28 games (one start) for the Camden RiverSharks and 3-2 with a 3.00 ERA (33.0IP, 11ER) in 18 games with the Pennsylvania Road Warriors in the Independent Atlantic League.

2006

Went 4-3 with a 5.31 ERA (59.1IP, 35ER) in 16 games (8 starts) for the Atlantic League's Pennsylvania Road Warriors.

2005

Did not play professional baseball.

2004

Went 1-4 with a 4.22 ERA (32.0IP, 15ER) in 6 starts with San Luis Point in the Mexican League.

2003

Went 7-8 with a 4.40 ERA (114.2IP, 56ER) in 28 games (15 starts) with the Newark Bears of the Independent Atlantic League.

2002

Went 2-2 with 5 saves and a 3.26 ERA (49.2IP, 18ER) in 28 games with the Newark Bears of the Independent Atlantic League.

2001

Batted .274 with 11 home runs and 54 RBI in 94 games (347 at-bats) with Bakersfield.

2000

Went 7-7 with a 4.59 ERA (102.0IP, 52ER) in 17 starts for Schaumburg in the Independent Northern League.

1999

Went 7-5 with a 4.27 ERA (97.0IP, 46ER) in 17 games (16 starts) for Schaumburg in the Independent Northern League.

1998

Did not record a decision in 17 games with Greensboro (5) and Tampa (12), pitching to a combined 3.60 ERA.

1997

Went 2-2 with a 5.61 ERA in 18 games with San Jose, striking out 30 in 33.2 innings.

1996

Went 3-0 with a 1.88 ERA in 9 games (7 starts) with Bellingham.

1995

Batted a combined .199 in 108 games with Bellingham (74) and Burlington (34).

1994

Did not record a decision in 6 games with Everett, posting a 6.75 ERA in 5.1 innings...Batted .225 in 160 at-bats.