We've tried to stay on top of this planking thing for you guys, because it's confusing and new and stressful. Last we dropped in on sports-based planking, some wealthy—but now unemployed—NBA stars got prone on ostentatious objects (Beamers, Benzes, or Bentleys, we cannot remember which).

Last night, Mark J. Rebilas, a Phoenix-based photog, decided to plank during the Home Run Derby, while on the clock. He sent the photo our way today. We can't tell exactly when during the Derby this happened; nonetheless, he's a pioneer. Plank on, all.