Not only did Blake Treinen build on his 2017 breakout with Oakland, he turned in a historic season. Treinen became the first pitcher in major league history to save at least 30 games, compile an ERA below one and strikeout at least 100 batters. He also recorded the lowest ERA (0.78) since its inception as an official statistic among pitchers with at least 80 innings of work. Versus all American League pitchers, here’s how Treinen ranked last year:

  • Yielded the lowest on-base percentage (.207) and on-base plus slugging percentage (.417)
  • Second in slugging percentage allowed (.199)
  • Third in saves (38)
  • Fourth in batting average allowed (.158)
  • Fifth in strikeouts (100)

His final line of nine wins, two losses, 38 saves, 100 strikeouts, 21 walks, a 0.78 ERA, 2.42 xFIP and 0.83 WHIP resulted in profits for owners who targeted him last year. Treinen also recorded a 51.9 ground ball rate and eye-popping 25.1 strikeouts minus walks percentage.

According to Statcast,...