We turn to the rivalry renewed that have so many buzzing. Michael Phelps, going head-to-head with Ryan Lochte. Linzie Janis is in the social square with the story. Reporter: The boys back. After... See More
We turn to the rivalry renewed that have so many buzzing. Michael Phelps, going head-to-head with Ryan Lochte. Linzie Janis is in the social square with the story. Reporter: The boys back. After winning a heat back in his first competitive waters, Phelps lost to his archrival Lochte in the 100-meter butterfly final. Here's how Lochte celebrated. With a shirtless selfie, surrounded by fans. That prompted plenty of posts, including a marriage proposal. Lochte admitted he almost retired last year because of a serious injury. But he's glad that he and Phelps are back competing against each other. And even though he came in second, Phelps was happy about his performance. Tweeting this, pumped to be racing again. Happy with the time. And right where I wanted to be. I don't know about you guys, but this rivalry is sounding a little warm and fuzzy right now. Does Ryan Lochte ever wear shirts? I was wondering. And was Michael Phelps not trying to up him with another shirtless selfie? Why peak early? I'm going with it. You can say he already has. It's all part of the strategy. Ginger keeping an eye on the
This transcript has been automatically generated and may not be 100% accurate.