that seems impossible. at first glance it does, but once you realize the finite number of possible combinations of 6 IP and under 4.5 ERA and what typically happens during those games, it starts to make sense. usually when a starter has a quality start, he actually has a dominant start, having allowed only a run or two if any. when a pitcher has only allowed a run or two through six, usually he stays in the game, thus increasing the number of IP and lowering the ERA for the game even more. if he gives up runs, often times its blows the QS all together, thus taking it out of the equations above. without delving into the rare instance when a starter goes extra innings, here are the possibilities. 6 IP - 3 ER - 4.50 ERA 6 IP - 2 ER - 3.00 ERA 6 IP - 1 ER - 1.50 ERA 6 IP - 0 ER - 0.00 ERA 7 IP - 3 ER - 3.86 ERA 7 IP - 2 ER - 2.57 ERA 7 IP - 1 ER - 1.29 ERA 7 IP - 0 ER - 0.00 ERA 8 IP - 4 ER - 4.50 ERA 8 IP - 3 ER - 3.38 ERA 8 IP - 2 ER - 2.25 ERA 8 IP - 1 ER - 1.13 ERA 8 IP - 0 ER - 0.00 ERA 9 IP - 4 ER - 4.00 ERA 9 IP - 3 ER - 3.00 ERA 9 IP - 2 ER - 2.00 ERA 9 IP - 1 ER - 1.00 ERA 9 IP - 0 ER - 0.00 ERA I agree to an extent that the stat stinks, but it's not that bad. I think the rule should be pitching six innings and allowing a 3.86 ERA or less. that way the stat includes 6 IP, 2 ER and 7 IP, 3 ER performances, but gets rid of 6 IP, 3 ER and 8/9 IP, 4 ER performances. however, considering how rare those starts are amongst the possibilities, the start really isn't that bad. Question/nitpick: Are the bolded actually considered QS? Everything I've heard is 6 IP or more, 3 ER or less, which is a very stupid definition.