 Complete the following phrase:  On the first day of the World Championships, Manuel anchored the womens 4x100-meter freestyle relay to a gold medal alongside Mallory Comerford, Kelsi Worrell, and Ledecky. She split a very fast 52.14 to anchor the team to a new American record time of 3:31.72. Manuel picked up her second gold of the meet when she anchored the 