Aaron Boone no longer has to worry about being fired ... so says Yanks legend Tino Martinez, who tells TMZ Sports NY's latest surge is more than enough to keep the manager safe.
"I think he's done a great job," Martinez said out in NYC this week. "He's great for the team, the organization -- so I think he deserves to be here as long as he wants."
Of course, Yankees fans and perhaps even ex-NY players didn't always feel that way this season ... 'cause for a while, the Pinstripes were REALLY struggling under Boone.