Stint in Atlanta and Colby Armstrong incidentEdit
On June 23, 2010, Eager was traded to the Atlanta Thrashers along with Dustin Byfuglien,Brent Sopel, and Akim Aliu, for the 24th overall pick, the 54th overall pick in the 2010 NHL Entry Draft, Marty Reasoner, Joey Crabb and Jeremy Morin. During the 2010–11 seasonEager delivered a "sucker punch" to the Maple Leafs' forward Colby Armstrong. Eager received a five minute major, a match penalty for intent to injure, and was ejected from the game. The NHL further suspended him for four games due to the incident. Midway through the season, he was traded to the San Jose Sharks for a fifth round pick in the2011 NHL Entry Draft.