Boosted by a hot energy sector, Houston’s Bracewell & Giuliani improved its average profits per partner to $1.45 million in 2012—a 42.2 percent leap that was The Am Law 100′s largest PPP gain. Revenue per lawyer, meanwhile, rose 16.3 percent, to $750,000, The Am Law 100′s second-largest gain in that metric.

"We had an absolutely stellar year," says Mark Evans, the firm’s managing partner. "The real driver in everything is the revenue per lawyer. At the end of the day, when you are looking at the revenue increase and basically the same number of people, we were able on an individual basis to generate a big increase in revenue." The firm’s head count increased by 10, to 432 from 422, while gross revenue rose 19.7 percent, to $325 million. The increase in gross revenue boosted the firm out of the Second Hundred and back onto The Am Law 100, at number 92.