Gotta be at least 42 1/3 since he got out of the sixth and pitched the seventh of that game, right? I do not believe that record is kept to as fine a degree as outs. It's just kept as a whole number of innings. When Orel broke the record, he surpassed Drysdale's old record of 58 2/3 IP by only 1/3 of an inning to get to 59IP. If that's the case, then Hershiser's streak should have been longer since he got 2 outs before the Reds scored in his first start of the following season. (And he most likely also got the last out of the inning right before he started the streak). I asked this exact question on Baseball-Fever, but couldn't come up with a definitive answer. Link In any case, I've always heard Hershiser's record as 59 scoreless innings and Drysdale's former record as 58 scoreless innings.