(SP) – Former New England Patriots tight end Aaron Hernandez is said to be irate over a jury not finding him guilty of a double murder in 2012, leaving the imprisoned player with just one official murder on his record.

“I’ve not seen this with a client before,” said Hernandez’s attorney, Ron Sullivan. “But he was very angry about not being convicted. He’s already in prison for a previous killing and multiple murders afford him a kind of respect inside. Murder is currency.”

In addition to Hernandez’s concerns that he won’t have the respect of a triple-murderer in jail, he’s also angered that someone else could get credit for the murderers.

“This is a proud athlete who is used to seeing his name on the stat sheet for everything good he did,” said Sullivan. “So he’s a little miffed about not getting those murders beside his name. He cares about putting up numbers.”

Without the Boston double murder on his record, Hernandez may admit to other unsolved murders.

“He wanted to go down as the greatest tight end in football history,” said his attorney. “That probably isn’t going to happen. But he still wants to be known as the greatest murderer in football history.”