Justin Johnson was named senior vice president, partnership strategy for Madison Square Garden Sports.

Tonya Leary joined Acquity Group New York as a client partner.

Documentary filmmaker Billy Corben joined Greenpoint Pictures for commercial film representation.

The USA TODAY Sports Media Group hired Jamie Mottram as its director of content development.

MEC hired Brian Eakin as senior partner, senior digital director and Eric Poritzky as senior partner, senior director.

ZenithOptimedia promoted Dave Penski to CEO of Zenith US; Rob Jayson to chief data officer for ZenithOptimedia Worldwide; and named James Shoreland to executive vice president of corporate development of ZenithOptimedia North America.

Carmichael Lynch named Stacy Janicki as director of account management, senior partner.

Bryan Camella joined Amazon Media Group as a senior Kindle ad product specialist.

Digitas New York hired Doug Speidel as senior vice president, creative, and Fritz Desir as vice president/group director, head of experience design.

Ethan Grey joined MPA as vice president, digital.