In a year of significant pinches to law firms' sources of income, all four Pennsylvania-based law firms in the Am Law Second Hundred lost ground in their annual ranking of U.S. law firms by revenue.

Buchanan Ingersoll & Rooney, Saul Ewing Arnstein & Lehr, Marshall Dennehey Warner Coleman Goggin and Eckert Seamans Cherin & Mellott each dropped slightly in the 2021 ranking compared to 2020, Am Law 200 data released Tuesday from ALM Intelligence and The American Lawyer shows.

Marshall Dennehey dropped two spots from 137 to 139. This was due in part to a half-percent drop in gross revenue from 2019 to 2020 to $224 million.