Sidley Austin has hired three arbitration lawyers from O’Melveny & Myers, including partner Friven Yeoh, who was most recently the head of the latter firm’s Hong Kong office.

Yeoh, who joined O’Melveny in 2009, was appointed Hong Kong managing partner last year. Following his departure, the firm has appointed Denis Brock to head its Hong Kong office. Brock joined from King & Wood Mallesons in 2014.

Joining Yeoh are counsel Desmond Ang and Yan Zhang.

This bolstering of Sidley’s litigation and dispute resolution department follows litigation head Charles Allen’s recent move from Sidley to Orrick, Herrington & Sutcliffe.

In June, O’Melveny lost another Asia-based managing partner, this time in Shanghai. DLA Piper hired Li Qiang as well as counsel Stewart Wang.