Time of a pitching change

[Igetp2s]

I'm in a dispute with a sportsbook regarding a prop in baseball. They claim a pitching change occurred after my wager was placed, canceling the bet. I think it occurred well before, and the wager should stand.

Where can I find out what exact time a pitching change occurred? I'm specifically looking for the August 4 game between Minnesota and the LA Angels. Chatwood was replaced by Dan Haren.

I've tried searching online and can't find this info. Thanks for any help, appreciate it.

[Justin7]

Ideally, your prop bet would list the starting pitchers.

Do you have a line history for that book? It should be easy to see when they changed the line. Compare that to the timestamp on your wager.

[Bob Loblaw]

Rotoworld announced it very early in the morning if that helps. 8:43am eastern time to be exact. It likely happened shortly before that.

[Bob Loblaw]

Joe Strib on Twitter announced it the night before (8/3)