The starters were 17th in ERA, 24th in FIP, 24th in xFIP, 20th in WAR, 28th in K/BB. There's not a single thing they were even average in last year. The problem with that analysis is that those metrics have the following year-to-year correlations: ERA: 0.38 FIP: 0.59 xFIP: 0.68 WAR: 0.61 K/BB: 0.63 So performances within those metrics from one year to the next don't correlate particularly well. The same group of pitchers could perform quite differently from year x to year y. GB% has a better correlation, at 0.85. Brewers starters were above average at producing ground balls, and with improved infield defense this year that should bode well. On the other hand, Swinging Strike %, has a 0.81 correlation and the Brewers starters produced the lowest swinging strike rate in baseball last year. Also, technically "17th in ERA" doesn't say anything about being above average or below average, it just means they were 17th out of 30. The arithmetic mean could lie around the 13th best team, or the 19th best team. FWIW, Fangraphs has the Brewers starters at about 2.5-3 wins below MLB median this coming season.