Denny Hamlin heads into the Iowa race with essentially no usable practice data after brake issues with his car, saying he'll be making educated guesses and hoping for cautions that let him flip strategy from the back. He also endorses the new late-stage caution rule, saying he's been complaining about painful pre-stage cautions for months, but raises a valid point that the 10-lap threshold may need to be adjusted track by track. Donate to Frontstretch here! frontstretch.com/donate Follow us on X: x.com/Frontstretch Follow Danny Peters on X: x.com/dannypeters Follow Michael Bellifemini on X: x.com/mbelf5 Like us on Facebook: facebook.com/Frontstretch Donate: frontstretch.com/donate #nascar #iowaspeedway #dennyhamlin