In his three big league seasons, Darvish is 29-22 with a 3.42 ERA when working on four days of rest or less, compared with 10-3 with a 2.58 ERA in 15 starts on five days of rest or more. He was 6-2 with a 1.49 ERA with the extra rest in the last two seasons compared with 17-14 with a 3.21 ERA on three or four days of rest.