Player Page

Peter O'Brien | Catcher

Team: Arizona Diamondbacks
Age / DOB:  (24) / 7/15/1990
Ht / Wt:  6'4' / 225
Bats / Throws: Right / Right

Latest News

Recent News

Diamondbacks general manager Dave Stewart said Tuesday that the club views prospect Peter O'Brien as their catcher of the future.
Stewart also revealed that he expects O'Brien to reach the majors at some point next season. It's interesting to hear, as the general feeling among scouts is that O'Brien's poor defense wouldn't allow him to stick behind the plate. Apparently the D'Backs are willing to live with some defensive struggles in order to get O'Brien's power into the lineup. The 24-year-old slugged 34 homers between High- and Double-A in 2014, though he hit just .271 with a .316 OBP and 111/21 K/BB ratio. Tue, Dec 9, 2014 07:47:00 PM

Highest Searched Players over the last 7 days

Player News


Diamondbacks acquire C Peter O’Brien and either a player to be named later or cash from the Yankees for 3B Martin Prado.

O'Brien, recently named New York's No. 9 prospect by, has blasted an impressive 33 home runs this season on the farm. So why isn't he ranked higher? Firstly, O'Brien's pitch recognition must improve -- he has a ridiculous .555 slugging percentage at Double-A, and a sickly .296 OPS. Will he be able to make consistent contact against the world's best pitchers? He's also is a poor defensive catcher who doesn't have the speed to project into the outfield, meaning first base is his only realistic option if the receiving doesn't improve ASAP.
Thu, Jul 31, 2014 04:56:00 PM

Yankees prospect catcher went 3-for-4 with a double and two home runs for Double-A Trenton on Wednesday.

O'Brien has 33 home runs for the season, and has hit .245/.296/.555 over 72 games with Double-A Trenton. His power is very much real, but he struggles with off-speed pitches and rarely walks. His batting average decreased by nearly 80 points with the move from High-A to Double-A, and it is unlikely that he will have any success in the major leagues without a substantial improvement.
Thu, Jul 31, 2014 10:41:00 AM

Yankees prospect Peter O'Brien went 2-for-3 with two home runs, a walk, and a hit by pitch for Double-A Trenton on Monday.

O'Brien had not hit a home run since June 23, so it was good to see him get back into the swing of things. Despite the power outage, he has hit well as of late, putting up a robust .379/.438/.655 line with one triple and two home runs. O'Brien has been spending most of his time at first base as of late, appearing in a total of 17 games at first base, six games at catcher, and three games at DH over his last 26 games.
Tue, Jul 8, 2014 08:41:00 AM

Yankees catching prospect Peter O'Brien went 2-for-4 with two home runs for Double-A Trenton, raising his season line to .266/.308/.602.

Despite O'Brien's power show, he has struggled in Double-A, hitting .228/.277/.543 with six doubles, 15 home runs, and 41 strikeouts in 173 plate appearances. He is tied for fourth in the Eastern League with 15 home runs, but his high strikeout and low walk totals demonstrate his need for a less aggressive approach.
Tue, Jun 24, 2014 09:21:00 AM

Yankees prospect catcher Peter O'Brien went 2-for-4 with his 23rd home run of the season for Double-A Trenton on Saturday.

O'Brien's line in the Double-A Eastern League has been pretty brutal, as he is hitting just .242/.286/.568 with 31 strikeouts (22.1%) and seven walks (5.0%) in 140 plate appearances. He's fifth in the Eastern League with 13 home runs, but pitchers have been able to pacify him with better quality pitches. O'Brien's power is real, but he needs substantial work on his approach at the plate if he has a chance to succeed at the major league level.
Sun, Jun 15, 2014 11:23:00 AM

Yankees catching prospect went 1-for-4 with his minor-league leading 19th home run for Double-A Trenton on Wednesday.

O'Brien has continued to hit for power since his promotion from High-A Tampa, but his batting average has taken a dive. He is hitting .247/.267/.658 with nine home runs and a .188 BABIP in 18 games for Double-A Trenton. For the season, he has six walks and 45 strikeouts in 194 plate appearances, so he may need to work on his approach before a promotion is a possibility. Primarily, he has been a designated hitter for Trenton, occasionally spelling Gary Sanchez behind the plate and making a few appearances in right field.
Thu, May 29, 2014 09:40:00 AM

Yankees prospect C Peter O'Brien continued to swing a hot bat on Monday for Double-A Trenton, as he was 2-for-4 with a double, home run and four RBI.

O'Brien has put up monster numbers since his promotion to Trenton, as the 23-year-old owns a 1.105 OPS with six home runs and 15 RBI through nine games. Between both levels this season, he's batting .313/.338/.720 with 11 doubles, 16 home runs (second in the minor leagues) and 34 RBI over 39 games. However, his 38/4 strikeout-to-walk ratio during that span also suggests the right-hander slugger could be in store for a regression moving forward. As it was the case at High-A Tampa, O'Brien continues to see most of his bats at catcher and designated hitter, though he's also continued to receive occasional playing time in right field.
Tue, May 20, 2014 12:36:00 PM

Yankees catching prospect Peter O'Brien went 2-for-4 with a home run for Double-A Trenton on Wednesday.

O'Brien has hit four home runs in five games for the Trenton Thunder, and is now hitting .261/.261/.826. He has 14 home runs for the season, which ties him with Rangers third base prospect Joey Gallo for the minor league lead. O'Brien has four walks and 34 strikeouts in 2014, but is hitting a combined .311/.338/.711 in 2014. He would be tied for 20th in the Eastern League with four home runs, but he does not have enough at bats to qualify.
Thu, May 15, 2014 10:20:00 AM

Yankees prospect C Peter O'Brien went 2-for-5 with a pair of home runs and five RBI on Sunday for Double-A Trenton.

O'Brien, 23, hit a three-run home run in the fourth inning and then added a two-run shot in the sixth. He was promoted to Double-A Trenton before the weekend series and hit safely in all three games, with each of his four hits going for extra-bases (three home runs and one double). It'll be interesting to see how much time O'Brien sees behind the plate, as top prospect Gary Sanchez is already playing at Trenton and ahead of him on the organizational depth chart. Prior to his promotion, O'Brien batted .321/.353/.688 with nine doubles, 10 home runs, 19 RBI and a 29/4 strikeout-to-walk ratio in 30 games for High-A Tampa.
Mon, May 12, 2014 06:04:00 PM

Yankees catching prospect Peter O'Brien was promoted to Double-A Trenton on Friday, and went 1-for-4 with a double in his debut.

The slugging mostly catcher (24 games at catcher, 6 games at RF, 1 game at DH) hit .321/.353/.688 with nine doubles, one triple, and 10 home runs for High-A Tampa. If he keeps hitting, he could reach the Bronx by the end of the season. He has struck out roughly one time per game during his minor league career, but he has hit at every stop other than his time with Short Season-A Staten Island shortly after being drafted.
Sat, May 10, 2014 10:21:00 AM

Yankees catching prospect Peter O'Brien hit his eighth home run of the season as part of a 2-for-3 day on Friday.

O'Brien is hitting .347/.383/.760 for the season, though he is approximately four months older than the average player in the High-A Florida State League. He has seven doubles (tied for seventh) and eight home runs (first by four home runs) for the season.
Sat, Apr 26, 2014 11:01:00 AM

Yankees prospect catcher Peter O'Brien was 2-for-4 with a home run on Thursday for High-A Tampa.

O'Brien's dinger was his seventh of the season, and he's now batting .333/.364/.708 with six doubles and 13 RBI in 19 games. The 23-year-old has massive raw power, evidenced by his .544 slugging percentage, 39 doubles and 22 home runs last season in 119 games between both Class-A levels. However, O'Brien's defense is pretty rough behind the plate and will prevent him from becoming an everyday catcher in the major leagues. And while O'Brien's power profiles cleanly at any corner position, his penchant for whiffing (134 strikeouts in 119 games last season) raises questions about its potential utility at the highest level. Don't be surprised if the Yankees move him to a new position at some point this season with the goal of expediting his arrival in the major leagues.
Fri, Apr 25, 2014 01:47:00 PM

Yankees prospect catcher Peter O'Brien is hitting .333/.369/.717 through his first 16 games for High-A Tampa.

The Yankees put O'Brien at third base last year for 38 games, but he made 18 errors on 91 chances and has yet to appear at the hot corner in 2014. He has appeared in three games in right field, but those appear to be a way to give him a night off from his catching duties. O'Brien has big time power, as is shown by his 22 home runs in 2013 and six in 16 games in 2014, but he is not a great defensive catcher and the Yankees appear to be looking for a way to get him from behind the dish.
Tue, Apr 22, 2014 10:53:00 AM

Depth Charts

C1Tuffy Gosewisch
2Oscar Hernandez
1B1Paul Goldschmidt
2Jordan Pacheco
2B1Aaron Hill
2Nick Punto
SS1Chris Owings
2Nick Ahmed
3Danny Worth
3B1Yasmany Tomas
2Jake Lamb
3Cliff Pennington
4Brandon Drury
LF1David Peralta
2Cody Ross
3Nolan Reimold
CF1A.J. Pollock
2Ender Inciarte
3Socrates Brito
RF1Mark Trumbo
Starting Pitcher
S1Bronson Arroyo
2Jeremy Hellickson
3Rubby De La Rosa
4Josh Collmenter
5Chase Anderson
6Vidal Nuno
7Robbie Ray
8Trevor Cahill
9Allen Webster
Relief Pitcher
R1Addison Reed
2Brad Ziegler
3Oliver Perez
4Evan Marshall
5Matt Stites
6Randall Delgado
7Daniel Hudson
8Matt Reynolds
9David Hernandez
10Will Locante
11Kevin Munson
12Enrique Burgos