Maybe Replacement Umpires Did in the Sox

Jon Lester -- highest ERA of his career (4.96).
Clay Buchholz -- 6 strikeouts per nine innings, lowest of his career.
Alfredo Aceves -- 1.295 WHIP, highest of his career.
Aaron Cook -- 1.3 home runs per nine innings, highest of his career.

OK, so umpires don't affect home runs ... I'm just saying... it's a little suspicious ...