Player Page

Peter O'Brien | Outfielder | #7

Team: Kansas City Royals
Age / DOB:  (26) / 7/15/1990
Ht / Wt:  6'4" / 235
Bats / Throws: Right / Right
College: Miami (FL)
Drafted: 2012 / Rd. 2 (0) / NYY
Contract: view contract details

Latest News

Recent News

Royals acquired 1B/OF Peter O'Brien from the Diamondbacks for RHP Sam Lewis.
O'Brien has flashed huge power numbers in the minors, but plate discipline has always been an issue and he doesn't fit well at any defensive position on the diamond. This move to the American League, where he can DH, should prove beneficial to his career. Though it's not like O'Brien has hit well in the majors up to this point, and Kansas City can be a tough place on power bats. Arizona designated the 26-year-old slugger for assignment in late December. Jan 3 - 5:58 PM

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Player News


Diamondbacks general manager Mike Hazen said that Peter O'Brien has drawn trade interest and is likely to be dealt.

O'Brien was designated for assignment a week ago, but it sounds like the D'Backs will be able to get something for him rather than lose him for nothing. Hazen said that both National League and American League clubs have inquired on O'Brien, who has great raw power but strikes out a ton and doesn't have a defensive home.
Fri, Dec 30, 2016 08:42:00 AM

Diamondbacks designated OF Peter O'Brien for assignment.

O'Brien drew some buzz a few years ago as a catcher with power, but he no longer catches, strikes out at a high rate and has really struggled in his brief big league chances. Still, there's a chance some team takes a shot on the 26-year-old's raw power.
Fri, Dec 23, 2016 02:06:00 PM

Diamondbacks recalled OF Pete O'Brien from Triple-A Reno.

O'Brien has five homers in just 67 career at-bats at the major league level, but that has come with a .164 batting average and .222 on-base percentage. The 26-year-old slugger will function as a bench bat.
Tue, Sep 6, 2016 06:08:00 PM

Diamondbacks optioned OF Peter O'Brien to Triple-A Reno.

Nick Ahmed is back from the paternity leave list and will take his spot on the active roster. O'Brien batted .123/.167/.333 with four homers and a 25/3 K/BB ratio over 21 games with the big club.
Mon, Jul 4, 2016 04:57:00 PM

Peter O’Brien slugged two homers and knocked in four runs in a 10-2 victory over the Phillies on Friday.

O’Brien launched a three-run homer against Adam Morgan in the fifth inning before taking Elvis Araujo deep for a solo shot in the seventh. The 25-year-old has just three hits in 19 at-bats with six strikeouts since being called up last Friday, but he has made them count, as all of them have been home runs. The all-or-nothing approach doesn’t make him the most stable option in fantasy leagues, but clearly there’s some pop here. He's worth a look in deeper formats, especially in leagues where he qualifies as a catcher.
Fri, Jun 17, 2016 11:36:00 PM

Peter O'Brien is in the Diamondbacks starting lineup on Friday, batting fifth and playing in left field.

The Diamondbacks have said that O'Brien is up to play this time around, which makes him a very interesting fantasy commodity, especially where he may be eligible at catcher. This is a legitimate power bat, so he's worth the gamble if available on the waiver wire.
Fri, Jun 10, 2016 08:36:00 PM

Diamondbacks recalled OF Peter O'Brien from Triple-A Reno.

O'Brien was slashing a monstrous .330/.356/.670 with 17 homers and 52 RBI over 212 at-bats with Triple-A Reno. The 25-year-old outfielder has four hits in 13 career major league plate appearances. Those in deeper NL-only formats might consider taking a flier on O'Brien given those minor league numbers, but he does not have a history of major league success at this juncture.
Fri, Jun 10, 2016 05:36:00 PM

Diamondbacks OF prospect Peter O'Brien clubbed three doubles Tuesday in a win for Triple-A Reno.

It was O'Brien's first game back after a brief promotion to the big leagues. O'Brien has been among the best hitters in the Pacific Coast League this year. He's tied for third in home runs (12), third in slugging (.618) and eighth in RBI (35). O'Brien actually slumped a little in May, hitting just .268 compared to .370 in April. The 25-year-old struck out in his only at-bat with the Diamondbacks before getting sent down.
Wed, Jun 1, 2016 02:17:00 PM

Diamondbacks optioned OF Peter O'Brien to Triple-A Reno.

He was only with the club for a few days as an extra bench bat while the club sorted out their rotation. Fantasy owners will have to wait until there's an opening for everyday at-bats before he'll have any mixed leagues value.
Sun, May 29, 2016 08:05:00 PM

Diamondbacks recalled OF/1B Peter O'Brien from Triple-A Reno.

O'Brien has batted .306/.330/.601 with 12 homers at Reno this season. He could have some deep league value, especially in leagues where he's catcher-eligible. However, O'Brien isn't guaranteed playing time so don't go overboard.
Fri, May 27, 2016 05:48:00 PM

Diamondbacks optioned OF Peter O'Brien to Triple-A Reno.

Enrique Burgos and Evan Marshall will join him in the minors. O'Brien found his power stroke this spring with five homers in 60 at-bats. He's headed back to Reno where he completely dominated last year (.284, 26 HR, 107 RBI).
Sat, Apr 2, 2016 09:28:00 PM

Peter O'Brien cranked his second and third home runs of the spring Sunday in the Diamondbacks' 11-4 Cactus League rout of the White Sox.

Arizona jumped all over White Sox starter John Danks, with O'Brien delivering a three-run shot in the second inning and a two-run bomb in the third. The big 25-year-old got the start at first base in this one. He has also been playing some corner outfield. If injuries create an opportunity for O'Brien at some point in 2016, he'll be worth grabbing in standard mixed fantasy leagues. The former catcher had an .883 OPS, 26 home runs and 107 RBI in 131 games last year at Triple-A Reno.
Sun, Mar 13, 2016 07:14:00 PM

Peter O'Brien singled in his only at-bat Tuesday against the University of Arizona Wildcats.

He played two innings of left field before getting yanked in the top of the third along with most of the other big-name Diamondbacks. O'Brien has expressed a desire to get more playing time behind the plate this spring and summer, but the decision-makers in Arizona seem content on turning him into a corner outfielder. The young slugger tallied 26 home runs and 107 RBI in 131 games last season at Triple-A Reno. If injuries move him into a starting role at some point in 2016, he'll carry significant fantasy intrigue.
Tue, Mar 1, 2016 08:04:00 PM

Diamondbacks manager Chip Hale said Peter O'Brien will play some catcher but will mostly be used as an outfielder during spring training.

O'Brien was hoping to move back behind the plate full time this season but the D'Backs' coaching staff seems to have other ideas. He'll be hard pressed for playing time in the outfield behind starters David Peralta, A.J. Pollock and Yasmany Tomas. O'Brien batted .284 with 26 HR and 107 RBI over 490 at-bats in the minor leagues last season.
Wed, Feb 17, 2016 03:34:00 PM

Depth Charts

C1Salvador Perez
2Drew Butera
3Brayan Peña
4Cameron Gallagher
1B1Eric Hosmer
2Samir Duenez
2B1Raul Mondesi
2Whit Merrifield
3Christian Colon
SS1Alcides Escobar
3B1Mike Moustakas
2Hunter Dozier
LF1Alex Gordon
CF1Lorenzo Cain
2Billy Burns
3Terrance Gore
RF1Jorge Soler
2Paulo Orlando
DH1Brandon Moss
2Cheslor Cuthbert
3Peter O'Brien
Starting Pitcher
S1Danny Duffy
2Ian Kennedy
3Jason Vargas
4Jason Hammel
5Nate Karns
6Travis Wood
7Mike Minor
8Jake Junis
Relief Pitcher
R1Kelvin Herrera
2Joakim Soria
3Matt Strahm
4Brian Flynn
5Chris Young
6Scott Alexander
7Kevin McCarthy
8Andrew Edwards
9Bobby Parnell
10Chris Withrow
11Al Alburquerque
12Brandon League
13Jonathan Sanchez