Melanie Margalis continued the run of impressive swims on the night with a massive comeback effort in the 400m I.M. at the 2021 TYR Pro Swim Series in San Antonio. She found herself behind first place by over four seconds at the midway point in the race. The I.M. veteran turned on the burners in the breaststroke and freestyle leg, going 38.38, 31.68 and 30.57 on her last three 50m splits to captur...