U.S. Olympic swimmer Matt Grevers proposed to girlfriend, U.S. National Team swimmer Annie Chandler, at the 2012 Missouri Grand Prix this weekend.

In order for his proposal to work, the 26-year-old Grevers' plan required him to secure a top spot at Saturday night's race.

After winning first place in his 100-meter backstroke with a time of 53.57 seconds, Grevers took to the podium while Chandler put the medal around his neck.  After the crowd applauded the victory, the 24-year-old returned to the podium to congratulate her boyfriend.

Just before Chandler walked away, Grevers reached into his right pocket and got down on one knee, while the audience erupted with cheers and whistles.

"If I didn't get first, it wouldn't have really worked out so well," he told the Associated Press.

Don't worry, he didn't swim his race with the engagement ring;  Grevers' brother had strategically placed the ring in the pocket of his sweatpants.

The race on Saturday wasn't Grevers first choice for the proposal.  After Chandler's 100-meter breaststroke race on Friday, he had wanted to propose but couldn't when she placed fifth and didn't get a spot on the podium.

Grevers asked Chandler's parent's for permission to marry her this past November.