Full coverage: 2016 Rio Olympics

The swimming action from Rio is all but done, with just the final relays remaining -- and what's expected to be the last Olympic medal in the storied career of Michael Phelps is just minutes away.

That make this a good time to review the action from the Aquatic Center. To check on the highs and the lows, Tracey Holmes caught up with John Lohn, from the publication Swim Vortex.