GOLDMAN, SACHS & CO.

Leadership: James Sprayregen and Dhurv Narain, co-heads; Andrew Wilkinson, head of London restructuring group; Lachlan Edwards, head of Sydney restructuring group

Pedigree: Group formed in 2004. Hired Sprayregen from Kirkland & Ellis LLP in 2006

Services: Distressed advisory and refinancing

Recent deals: $400 million Six Flags Inc. exchange offer; $1.1 billion Nortek Inc. refinancing; $1.456 billion AbitibiBowater Inc. refinancing and exchange offer; $2.05 billion Solutia Inc. exit financing; $563 million Sirva Inc. prepackaged bankruptcy filing; $7.3 billion Calpine Corp. exit financing