Player Page

Peter O'Brien | Outfielder | #14

Team: Arizona Diamondbacks
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

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. Sep 6 - 6:08 PM

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Player News


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.
Jul 4 - 4:57 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.
Jun 17 - 11:36 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.
Jun 10 - 8:36 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.
Jun 10 - 5:36 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.
Jun 1 - 2:17 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.
May 29 - 8:05 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.
May 27 - 5:48 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).
Apr 2 - 9:28 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.
Mar 13 - 7:14 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.
Mar 1 - 8:04 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.
Feb 17 - 3:34 PM

Peter O'Brien will enter spring training next year as a catcher.

O'Brien expressed a desire to move back behind the plate after spending the 2015 season trying out corner outfield. The 25-year-old has a big bat, but he was never a very good defensive backstop and how he fits into the Diamondbacks' future plans is currently unclear. Welington Castillo should open the 2016 season as Arizona's starting catcher.
Mon, Oct 5, 2015 02:17:00 PM

Peter O'Brien homered off Dallas Keuchel in his lone at-bat off the bench Friday against the Astros.

It seems crazy that the Diamondbacks haven't given O'Brien a single start since his callup on Sept. 8, but it likely has a lot to do with his unsettled position situation. The team is again looking at making him a full-time catcher, even though he's never going to be very good back there. His bat remains intriguing. He's had just seven plate appearances since his callup, but he's 3-for-5 with two walks. It seems like the Diamondbacks really blew it by not giving him some starts in left.
Sat, Oct 3, 2015 01:29:00 AM

Peter O'Brien has told the Diamondbacks that he wants to return to the catcher position.

O'Brien had the yips when trying to throw the ball back to the pitcher earlier this season and eventually moved to the outfield. He doesn't think it will be an issue anymore, though, and he and the D'Backs would both like him to take another crack at things behind the plate. O'Brien would certainly make for a much more interesting prospect if he can stick at catcher.
Tue, Sep 29, 2015 07:57:00 PM

Depth Charts

C1Welington Castillo
2Chris Herrmann
3Oscar Hernandez
1B1Paul Goldschmidt
2B1Brandon Drury
2Phil Gosselin
3Domingo Leyba
4Ildemaro Vargas
SS1Chris Owings
2Nick Ahmed
3Ketel Marte
4Dawel Lugo
5Jack Reinheimer
3B1Jake Lamb
LF1Yasmany Tomas
2Peter O'Brien
3Jeremy Hazelbaker
CF1A.J. Pollock
2Socrates Brito
RF1David Peralta
Starting Pitcher
S1Zack Greinke
2Robbie Ray
3Archie Bradley
4Braden Shipley
5Shelby Miller
6Rubby De La Rosa
Relief Pitcher
R1Jake Barrett
2Randall Delgado
3Enrique Burgos
4Andrew Chafin
5Silvino Bracho
6Patrick Corbin
7Steve Hathaway
8Zack Godley
9Matt Koch
10Jimmie Sherfy