Welcome to Law.com Class Actions: Critical Mass, a weekly briefing for class action and mass tort attorneys.

This week: A fight over who will lead the Uber sexual assault cases revved up with lawyers accusing each other of ‘professional misconduct’ and ‘smear campaign’ tactics. Major League Baseball and a Formula One team have joined a long list of celebrity defendants sued for promoting cryptocurrency exchange FTX. Find out who is representing IBM in class actions filed over a recent data breach.