Bob,
The important thing is at what time did you place the order, and what was the best bid available at that time. If even a hundreth of a second earlier, there does not seem to be a problem with the fill.
Brokers have a certain amount of time to report internalized trades, though I'm not sure what the rules are regarding time stamping of the fills - I know I get a ton of off-exchange fills in my tick data that seem out of sequence.
The important thing is at what time did you place the order, and what was the best bid available at that time. If even a hundreth of a second earlier, there does not seem to be a problem with the fill.
Brokers have a certain amount of time to report internalized trades, though I'm not sure what the rules are regarding time stamping of the fills - I know I get a ton of off-exchange fills in my tick data that seem out of sequence.