Skadden, Arps, Slate, Meagher & Flom’s $11 million settlement with Yulia Tymoshenko marks the latest embarrassment for the firm related to its work in  Ukraine nearly a decade ago.

But for those who follow law firm liability issues, there’s another feature that stands out. The case is also one more in a string of high-profile disputes pitting Skadden’s defense lawyers at Gibson, Dunn & Crutcher against a regular adversary: Reid Collins of Reid Collins & Tsai.