BARCELONA — When Michael Phelps walked away from swimming after the London Olympics, he was adamant about one thing: His career was over.
Now, it sounds like he’s not so sure.
While saying he’s never been happier with his life — and certainly doesn’t miss the grind of what it took to become the winningest athlete in Olympic history — Phelps left the door open to change his mind before the 2016 Rio Games.
‘‘I don’t know what’s going to happen in the future,’’ Phelps said Monday. ‘‘I don’t know what’s going to happen tomorrow.’’
In Barcelona for the world swimming championships, Phelps was asked whether he’ll compete at the next Olympics, he coyly said he hasn’t planned that far ahead in his life.
That’s a striking change from his comments before and immediately after the London Games, when he insisted his retirement was set in stone and it had always been his goal to quit swimming before he turned 30.
Phelps will be 31 when the Rio Games open. Full story for BostonGlobe.com subscribers.