Current constraints on the Hu-Sawicki f(R) model with n = 1. References (updated list from Lombriser 2014): dwarf galaxies (Jain & VanderPlas 2011; Vikram et al. 2013), distance indicators in dwarf galaxies (Jain et al. 2013), solar system (Hu & Sawicki 2007; Lombriser et al. 2014), strong gravitational lenses (SLACS, Smith 2009), stacked phase-space distribution (Lam et al. 2012), cluster abundance + CMB (Cataneo et al. 2015), coma gas measurements (Terukina et al. 2014), cluster profiles (XMM Newton, Wilcox et al. 2015), matter bispectrum (Gil-Marín et al. 2011), galaxy infall kinematics (Zu et al. 2014), cluster abundance (Chandra, Schmidt et al. 2009; Ferraro et al. 2011), cluster density profiles (maxBCG, Lombriser et al. 2012), supernova monopole radiation (Upadhye & Steffen 2013), CMB ISW-lensing bispectrum (Hu et al. 2013; Munshi et al. 2014).