Chris Butler trades
| Buffalo Sabres acquire | Date | Calgary Flames acquire | ||
|---|---|---|---|---|
 | Ales Kotalik | June 25, 2011 | Chris Butler |  |
| Robyn Regehr | Paul Byron | |||
| 2012 2nd round pick | ||||
History of NHL trades
| Buffalo Sabres acquire | Date | Calgary Flames acquire | ||
|---|---|---|---|---|
| Ales Kotalik | June 25, 2011 | Chris Butler | |
| Robyn Regehr | Paul Byron | |||
| 2012 2nd round pick | ||||