The HR Derby Contestants

I have a strange affinity for the Home Run Derby. It spawns from watching re-runs of the old school Home Run Derby TV series, originally aired in 1960. The rules were different back then — two hitters went head-to-head, squaring off in a nine-inning “game” in which each batter got three outs per inning. If a player didn’t swing at a pitch in the zone, it counted as an out. Between turns, a batter would kick back and chat with host Mark Scott. The winner got a check for two grand and the chance to defend his title the next week against a new opponent. The list of those who competed — Hank Aaron, Willie Mays and Mickey Mantle among them — is a who’s who of all-time greats.

It’s true, the current form of the Home Run Derby doesn’t compare to its progenitor. The field of contestants doesn’t always include a cavalcade of stars. Sometimes, it seems like hitters take 20 pitches right down the middle before letting ‘er rip. And, the broadcast of the event really should come with a public service announcement imploring viewers to turn down the volume, lest they be haunted in their sleep by shrieks of “backbackbackback.”

Yet, despite its flaws, I watch intently. There’s something enthralling about those majestic moon shots. This year, the list of derby contestants includes Miguel Cabrera, David Ortiz, Nick Swisher and Vernon Wells from the American League, and Corey Hart, Matt Holliday, Hanley Ramirez and Chris Young from the National League. While I don’t claim this will have any predictive value — having a BP coach lobbing mid-60’s fastballs down the pike is quite another thing from game conditions — I thought it would be fun to take a closer look at tonight’s contestants. Where do they hit their homers, how hard are they hit, and how far do those taters travel?

Here’s a chart showing where the HR derby competitors have gone yard this season. I listed switch-hitter Swisher’s numbers from both sides of the plate:

Not surprisingly, most of the contestants’ home run power comes to the pull side of the field. Cabrera is crushing the ball both to the pull side and the opposite field — his home run per fly ball percentage to the pull side is 65 (27.2% MLB average for RHB), and it’s 14% to the opposite side (2.8% MLB average for RHB). Hart and Ramirez have also gone to the opposite field more than most, while Ortiz and Swisher have hit a decent number of homers to center.

Courtesy of Greg Rybarczyk’s Hit Tracker Online, here’s how the HR Derby contestants rank in terms of speed off the bat on those homers. The MLB average, for comparison’s sake, is 103.4 MPH:

Wells (106.8 MPH) leads the pack, followed by Holliday (106.1), Cabrera (105.2), Ortiz (104.2), Ramirez (104.1), Young (102.7), Swisher (102.3) and Hart (101.9).

Who’s hitting the longest homers? Hit Tracker measures the “Standard Distance” for home runs hit. From the site, here’s the definition:

The estimated distance in feet the home run would have traveled if it flew uninterrupted all the way down to field level, and if the home run had been hit with no wind, in 70 degree air at sea level. Standard distance factors out the influence of wind, temperature and altitude, and is thus the best way of comparing home runs hit under a variety of different conditions.

Here’s how the derby hopefuls rank in terms of Standard Distance homers. The MLB average is 393.8 feet:

Wells (406.5 Feet) and Holliday (406.1) again rank first and second. Ramirez (400.2), Ortiz (398.8), Cabrera (396.8), Swisher (396.4) and Young (394.5) all best the big league average, while Hart (392.5) comes in below that mark. Hart is tied for the major league lead in “Just Enough” homers, with 10. Just Enough’s, per Hit Tracker, clear “the fence by less than 10 vertical feet,” or land “less than one fence height past the fence.”

And finally, to pre-empt against any cries of “the derby screwed up his swing!,” here are the contestants’ current wOBA totals, as well as their projected rest-of-season wOBA figures from ZiPS. In other words, here’s what they have done so far, and here’s what we can reasonably expect in the second half:

Six out of eight project to hit worse in the second half. Some of these guys have greatly exceeded their previously established level of performance. Even accounting for the spike in production (ZiPS incorporates data from the current season), they figure to regress somewhat when games resume Thursday. If Hart doesn’t continue hitting bombs at a prodigious rate, it’s not because of some HR derby hex — it’s the product of regression to the mean.