Garten Bierbower claimed Don Willis ran 45 racks of 9ball. I find that hard to believe but he says it here:
https://www.youtube.com/watch?v=7zFax7pwcw8
Doesn't sound likely, but if it did happen, I'd call it the equivalent of a run of over 2,000 in straight pool.
Even against the ghost, a 45-pack is almost inconceivable.