Sheets - 601.2 IP, 545 H, 91 BB, 591 K, 209 ER, 3.13 ERA, 1.06 WHIP, 1.36 BB/9, 8.84 K/9 Zambrano - 752.1 IP, 602 H, 326 BB, 686 K, 276 ER, 3.30 ERA, 1.23 WHIP, 3.90 BB/9, 8.21 K/9 The only stat Zambrano beats Sheets at is hitting and staying healthy. Like I said this is at best a push and if you want to weigh it towards this season more you could make an argument for advantage Sheets. There is no way its advantage Zambrano though. ERA+ is a garbage stat so don't use that to try to prove anything, its based on poorly designed park factors. WARP is a stat that is going to depend on playtime too much. Sheets has K'd more, BB'd less, had a better ERA, had a better WHIP over the past 3.5 years, at best this is a push.