Nationals Arm Race

Welcome to the Majors Nathan Karns. Photo perfectgame.org

Continuing a monthly series of look-backs at our starters (here’s Apr 2013 post), here’s a monthly glance at how our .500 team is doing from a Starting Pitching standpoint.  As with last month, we’ll have “Grades” per outing, the team’s performance per opposing starter sliced and diced a few ways, and other per-starter stuff that I like to track.

MLB Rotation Per-Start Grades for May:

Discussion: Nats Pitcher YTD Stats from Baseball-Reference are here

Strasburg has stepped up his game after his well-documented 4-unearned run meltdown and has dominated his last three starts before straining his Lat on 5/31 (hence the “incomplete” grade).  Gonzalez remains up-and-down, as he was in April/  He’ll be excellent and then less than mediocre start to start.  Zimmermann‘s 6 run 7th in Baltimore is the only blip on an otherwise fantastic month which has put him into Cy Young contendor status.  Haren‘s up and down starts finished off with a heroic effort in Baltimore on 5/30/13, pitching into the 8th and giving up just two runs to one of the more potent offenses in the league.  Detwiler‘s month was cut-short by his injury and subsequent D/L trip.  Lastly the Nats one known glaring weakness heading into this season (Starting pitching depth) has been exposed with the two spot starts we’ve gotten from Duke and Karns.  I know Karns’ grade isn’t that fair considering the circumstances (MLB debut, hot night, tough hitting team), but his stat-line is what it is.

May Performance By Opponent Starting Pitcher Rotation Order Number

A look at the opposing team’s rotation ranked 1-5 in the order they’re appearing from opening day.

Thoughts; as always, not all opposing team #1 starters are the same.  But, the Nats actually fared pretty durn well against opposing #1 and #2 guys in May.  Where they struggled were against the #3 starters in May; you cannot lose to the likes of Scott Feldman, Eric Stults and Chris Tillman.  They also struggled with what I call “5+” starters; guys who were call-ups to replace opening day starters.  Sometimes a 5+ is a rising ace prospect (theoretically a Kevin Gausman or perhaps a Matt Harvey in the end of 2012) and sometimes they’re a 4-A guy (Jonathan Pettibone).  But usually you expect a winning record there.

May Performance By Opponent Starting Pitcher Actual Performance Rank Intra-Rotation

A ranking of opposing teams’ rotations by pure performance at the time of the series, using ERA+ heavily.

On the bright side; going 6-2 against the opposing team’s 2nd best starter isn’t bad.

May Performance By Opponent Starting Pitcher League-wide “Rank”

A team-independent assignment of a league-wide “rank” of what the starter is.  Is he an “Ace?”  Is he a #2?

I like this table the best; It usually shows where a team really is over- or under-performing.  There’s no shame in going 1-3 against the league’s best hurlers.  And its fantastic to see the team going 4-0 against that collection of league-wide #2s.  It is downright awful to see the team go 4-5 against this collection of #5 starters.

May Records by Pitching Advantage

Start-by-start advantages in my own opinion and then looking at the results.

In other words, the team when 9-5 when I thought Washington had the pitching advantage, 2-4 when I thought the pitching matchup was even, and 4-4 when I thought the opposing team had the advantage.  This is about what I expected, perhaps wanting to see a slightly better record in our advantage’d starts.  The Strasburg-Edwin Jackson loss hurt, as did the Zimmermann-Stults loss.

May matchup analysis

Looking at the opposing starter rank that our guys are going up against to see how their competition fares.

Detwiler’s turn now basically matches up with the opposing teams’ best guys, while Haren is getting more and more #5 and #5+ guys but continues to struggle.