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 think it cannot include individual outs before the streak begins, but can include individual outs once the streak begins. For example, say a pitcher gave up a home run, then got the next guy out to end the inning, and pitched three scoreless inning after that. It would only be counted as three scorless innings. However, if he pitched three scorless innings, then got one out in the next inning before giving up another homerun, he would have three and one third scorless innings. As for Hershieser's streak, the reason it is 58 and two thirds scoreless innings is because he got those two outs on the Reds before they scored.