I think you answered your own query there, the stats don't relate to a second spell because it wasn't their first career game in charge.I’m still not sure that’s true. The last 15 must include caretaker managers, too, and I know Ferguson got beat 1-0 by Slippy before Lampard got appointed. Unsworth also got beat in his first game before Allardyce got appointed (I realise both were unbeaten in their first games during their first spells as caretaker manager, though).