FIP (Fielding Independent Pitching) takes the three outcomes that pitchers exert the most control over (strikeouts, walks, home runs) and synthesizes them to scale with ERA. Since ERA includes a number of factors pitchers exert considerably less control over, it is noisier on a year to year basis, whereas FIP correlates much better from season to season. Looking at the top five starters you can see how Houser and Lauer have K% and BB% much closer to league average, which translates to around a league average FIP, where the Big Three have much better K/BB percentages yielding more impressive FIPs... Burnes | 147 K%+ | 55 BB%+ | 26 HR9+ | 37 FIP- Woodruff | 127 K%+ | 72 BB%+ | 77 HR9+ | 72 FIP- Peralta | 143 K%+ | 117 BB&+ | 67 HR9+ | 73 FIP- Lauer | 91 K%+ | 86 BB%+ | 88 HR9+ | 94 FIP- Houser | 76 K%+ | 118 BB%+ | 65 HR9+ | 103 FIP- While Houser & Lauer might be closer to league average by FIP, they rank 20th (Lauer 71) and 48th (Houser 85) by ERA- among 126 starters with at least 80 IP so both are already performing in the range of number two starters by run prevention if not by pure stuff.