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Entries in low pitches (2)


Bucs, Cards Thrive Low in the Zone

The Pirates and Cardinals will square off in the National League Division Series, thanks in large part to pitching staffs boasting top-five ERAs during the regular season. Pittsburgh and St. Louis are mirror images on the mound, and that comparison extends beyond possessing a vets with wicked curveballs (Game 1 starters A.J. Burnett and Adam Wainwright), hot-shot rookies (Gerrit Cole, Shelby Miller, and Michael Wacha, among others) and where-did-he-come-from closers once again facing doubters (Jason Grilli and Edward Mujica). These clubs are equipped for deep October runs because their pitchers pound hitters at the knees, generate grounders and keep the ball in the park at historic levels. It doesn't hurt that their backstops skillfully steal strikes on borderline pitches, either.

Waging a Ground War

Collectively, the Pirates have thrown an MLB-high 47.6 percent of their pitches to the lower third of the strike zone. The Cardinals also live low in the zone, locating there at the eighth-highest clip (43.3 percent) in the majors. Pittsburgh and St. Louis' "keep it low" philosophy has produced ground balls by the bushel -- the Pirates have the highest single-season team ground ball rate (52.5 percent) in the majors over the past decade, while the Cardinals (48.5 percent) come in eighth.

Charlie Morton (64.6 percent) is the game's top worm-burner among starting pitchers, with Burnett (58.2 percent)  also ranking in the top 10. Francisco Liriano (52.4 percent), Joe Kelly (51.5 percent), Cole (51 percent) and Wainwright (50.1 percent) are among the grounder-centric starters who figure to make a difference in this series (sorry, Jeff Locke and Jake Westbrook).

Seth Maness (70.7 percent) is the most difficult reliever to loft this side of Brad Ziegler, and lefty hit man Randy Choate (68.4 percent) isn't far behind. Mark Melancon (62.2 percent), Carlos Martinez (56.5 percent) and Justin Wilson (53.5 percent) could also alter a game with a late-inning double play.

The Pirates complement their scorched-earth policy by frequently shifting their infielders, a strategy that has paid off in the form of the fifth-lowest opponent average on ground balls hit (.230) in 2013. The Cardinals (.248) are right around the MLB average (.248). 

Historic Homer Prevention

By waging a ground war, the Pirates (0.62 home runs allowed per nine innings) and Cardinals (0.69 HR/9) have surrendered the fewest homers among all MLB clubs. Once you adjust for year-to-year variations in league wide home run levels, the '13 Bucs and Cards are both enjoying one of the ten best homer prevention seasons in club history during the Live Ball Era (1920-present).

This year's Bucs team ranks fourth in franchise history during the Live Ball Era in HR+, or a team's home run rate as a percentage of the National League average during that season. They have surrendered 30 percent fewer homers than the NL average.

Lowest HR+ for Bucs during Live-Ball Era

St. Louis, meanwhile, has given up 22 percent fewer big flies than the NL average this year. That's tied for ninth-best in franchise history during the Live Ball Era.

Lowest HR+ for Cardinals during Live-Ball Era

Stealing Strikes

Aside from inducing ground balls and preventing home runs, there's another added benefit for Pirates and Cardinals pitchers who keep the ball down -- their catchers do a great job of framing low pitches. Yadier Molina and Russell Martin both get more called strikes on low pitches thrown in the strike zone (In-Zone ClStr%) than most catchers, with Molina ranking third among all backstops receiving at least 2,000 pitches and Martin ranking sixth. Molina also gets an above-average number of calls on low pitches that are located off the plate (Out-Zone ClStr%), placing sixth in the majors. Martin is around league average in that regard.

Molina and Martin's called strike rates on low pitches, 2013

With their pitchers getting so many grounders and Martin influencing calls on stuff located at the knees, the Pirates have limited batters to an MLB-low .248 slugging percentage on low pitches this season. The Cardinals' combo of ground ball pitchers and a strike-stealing catcher in Molina has yielded a .308 opponent slugging percentage on low stuff, tied for eighth-lowest in the game. Every pitching coach stresses the need to pound hitters are the knees. But the Bucs or Cards could just ride that platitude to postseason glory.


Harper Hampered By Low Stuff

With Mike Trout going all Willie Mays on the American League and his precocious NL counterpart struggling, the Bryce Harper hype machine has died down considerably. Harper's OPS+ has dipped to exactly league average (100). That's still amazing for a 19-year-old -- just five teenagers in MLB history (Mel Ott, Tony Conigliaro, Johnny Lush, Ken Griffey Jr. and Edgar Renteria) have posted better batting marks while getting 400-plus plate appearances in a season. But Harper has undoubtedly been hampered by low stuff during his rookie year.

Here's Harper's contact rate by pitch location, and then the league average. He's connecting often on high and middle pitches. Stuff at the knees is another matter entirely:

Harper's contact rate by pitch location, 2012


Average contact rate by pitch location, 2012


Harper's miss rate on high pitches (17.3%) is much lower than the MLB average (21%). He whiffs more than most on middle pitches (15.6% versus the 12.9% average), but you'll see in a moment that he more than makes up for it with epic power.

On low pitches, however, Harper's 41.2% miss rate is far north of the 31.6% MLB average. And when he does make contact, it's rarely the kind of hellacious, seam-ripping hit we've come to expect:

Harper's slugging percentage by pitch location, 2012


Average slugging percentage by pitch location, 2012


He's slugging .444 against high pitches (.392 average) and a robust .604 against middle stuff (.481 average). Yet when pitchers pound him at the knees, Harper has been one of the worst in the game:

Lowest slugging percentage vs. low pitches, 2012

BatterSlugging Pct.
Elvis Andrus .134
Brandon Crawford .147
Jamey Carroll .156
Rickie Weeks .159
Carlos Pena .178
Cameron Maybin .208
Corey Hart .220
Bryce Harper .236
Michael Bourn .239
Jason Kipnis .242
MLB Avg. .335


Opponents may be picking up on Harper's low-ball struggles: He has seen a season-high 47% of pitches thrown down in the zone this month (the MLB average is a little under 42%; Harper saw low pitches 41.4% of the time from April-July). There's little reason to think Washington's slugging wunderkind won't eventually figure out how to crush pitches thrown down. But in the meantime, going low is a winning strategy against Harper.