Exploring the Arsenal: Previewing the Orioles’ Probable Starting Pitchers

Exploring the Arsenal will run prior to each series, providing you with a brief scouting report on the starting pitchers expected to oppose the Pirates. The charts below show the horizontal and vertical movement of every pitch thrown by that particular pitcher in 2012. These charts are from the catcher’s point of view. For a general guide to pitch types for a right-handed pitcher, please check out this image created by Sons of Sam Horn. Graphs are courtesy of Brooks Baseball and The Hardball Times .

Pitch Types  
FA: Four-Seam Fastball FT: Two-Seam Fastball FC: Cutter
CU: Curveball SL: Slider CH: Changeup
FS: Splitter SI: Sinker


Tuesday, 7:05 PM – Wei-Yin Chen

Chen has a deliberate delivery and appears to fling the ball toward the plate with uneven arm action. His fastball generally sits around 90-91 MPH, occasionally touching 94. He likes to go to his tailing two-seamer on the outer half against right-handed batters. Despite the average velocity, he has missed a good number of bats with the heater. His primary breaking ball is an 80-82 MPH slider, which he leans on heavily against lefties. He also mixes in an occasional slow low 70’s curveball, a pitch that is difficult to put in play. Chen does a decent job of locating his 82-83 MPH changeup down and away to righties, generating mostly weak contact with the pitch.

Wednesday, 7:05 PM – Jake Arrieta

Arrieta throws hard, with a four-seam and two-seam fastball that both sit around 93-94 MPH. He throws a slider in the upper 80’s and a cutter around 90 MPH. Other than the difference in velocity, these two offerings are difficult to distinguish from each other, and might actually be a single pitch. Arrieta also throws a big upper 70’s curve and an upper 80’s changeup. He has been pretty hittable in the past, but has missed a decent number of bats with his changeup and slider this year. He also generates loads of ground balls with his curveball.

Thursday, 7:05 PM – Tommy Hunter

Hunter throws his fastball around 89-91 MPH and can ramp it up to 94 at times. His four-seamer is fairly straight, while his two-seamer flashes occasional good, late arm-side movement. He throws an upper 80’s cutter, a low 80’s changeup and an upper 70’s curveball. The curve moves quite a bit horizontally, but it breaks early and is not very deceptive. He also tends to leave it up in the zone fairly often. Hunter has leaned heavily on his fastball/cutter combo this year, going to the soft stuff on fewer than a fifth of his pitches. He is one of the most hittable pitchers in baseball, with strikeout and whiff rates that are among MLB’s worst in 2012.

Share This Article

Matt Bandi

Matt has covered the Pirates at Wait ‘Til Next Year, Pittsburgh Lumber Co. and now Pirates Prospects. He served as Pirates team expert for Heater Magazine in 2009 and 2010 and has contributed to Graphical Player 2009, 2010 and 2011. Matt was also the editor of the 2011 and 2012 Pirates Prospects Annuals.

Barmes Getting His Swing Back After Working With Hurdle

Next Story »

Luis Heredia Will Start Season in State College

Latest Analysis

  • Nick Kingham f

    Improving His Two-Seam Fastball will Make Nick Kingham a More Effective Pitcher

    14 hours ago

    With Jameson Taillon returning from Tommy John surgery, and unlikely to make an impact at the Major League level early in the year, the top prospect to ...

    Read More
  • Arquimedes Caminero 3

    The Roster Situations That Could Impact the Makeup of the Pirates Bullpen

    3 days ago

    There are less than two weeks remaining in Spring Training, and the one area where the Pittsburgh Pirates had actual position battles is heating up. There were ...

    Read More
  • Jordan Luplow

    How the Pirates are Trying to Stay Ahead of the Curve With the New Draft Rules

    4 days ago

    The 2011 Collective Bargaining Agreement brought a lot of changes to Major League Baseball. The biggest change for the Pittsburgh Pirates came in the draft. From 2008-2011, ...

    Read More
  • Alen Hanson

    The Key For Alen Hanson to Help the Pirates in the Majors This Year

    4 days ago

    When the Pittsburgh Pirates moved Alen Hanson to second base last year, part of the plan was to get him to the majors faster by putting him at ...

    Read More
  • Tyler Glasnow 2

    What the Stats Don’t Tell You About Tyler Glasnow

    6 days ago

    The stat line for Tyler Glasnow’s start at Pirate City yesterday looked great: 3 IP, 0 H, 1 R, 1 ER, 1 BB, 1 K. The lone run ...

    Read More
  • JaCoby Jones Josh Bell

    JaCoby Jones Did Fine in the Move to Shortstop, But Needs to Cut Down on Strikeouts

    1 week ago

    The Pittsburgh Pirates drafted JaCoby Jones as an outfielder in the third round of the 2013 draft, then surprised everyone the following year when they moved him ...

    Read More
  • Cody Dickson is a lefty with the upside of a middle of the rotation starter. (Photo Credit: Mark Olson)

    The Mental Adjustment that Led to Cody Dickson’s Dominant 2014 Second Half

    1 week ago

    Trusting his stuff and not trying to do too much — that has been the key for left-handed pitcher Cody Dickson so far in his professional baseball ...

    Read More
  • Third Base Mathisen Luplow Joe

    Who’s on Third? In the Pirates’ Farm System, It Could Be Anyone

    1 week ago

    If you have ever played third base in your life — professional, college, high school, slow pitch softball — then the Pittsburgh Pirates might be contacting you ...

    Read More
  • Jason Creasy

    Another Pitcher to Watch From the Pirates’ 2011 Draft

    2 weeks ago

    The 2011 draft is shaping up to be a great class for the Pittsburgh Pirates. They picked first overall that year, so naturally you’d expect good things ...

    Read More
  • Peacock Nevarez

    Will One of These Pirates Minor League Pitchers Be the Next John Holdzkom?

    2 weeks ago

    By now you probably know that John Holdzkom rose from independent ball last year and made it to the majors. It was one of the best stories in ...

    Read More
  • Browse More Articles