Women’s 100 butterfly (final): It will take an amazing effort for someone to beat Dana Vollmer to the wall. After finishing fifth in this event at the 2008 Trials, Vollmer will want to prove even more that she should be the favorite after winning the 2011 FINA World Championship. But she, and everybody else who will be on hand Tuesday night, understands even an Olympic berth isn’t a guarantee with opponents like Natalie Coughlin, Elaine Breeden, Kathleen Hersey and Claire Donahue in the field. Still ...
Men’s 200 freestyle (semifinals): Combine the seed times of the top four in this race — Ryan Lochte, Michael Phelps, Peter Vanderkaay and Ricky Berens — and you come up with 7:02.77. That’s just over four seconds slower than the world record time of 6:58.56 that quartet swam in 2008. Because more berths should be available for the relay, more than the top two should earn a spot on the U.S. Olympic roster. But the two Americans who will swim the open event in London won’t be determined until Wednesday’s final.
Women’s 100 breaststroke (semifinals): After 16 heats of prelim swims in the morning, 16 swimmers will compete in primetime for a spot in Wednesday’s finals. Rebecca Soni is the clear favorite — her seed time is almost one second faster than anyone else’s — but Jessica Hardy is looking to make a statement of her own. They are the only two contestants with a time under 1:06.
Men’s 100 breaststroke (finals): Brendan Hansen seems to be on the same kind of focused path as Vollmer. He’s the only one who finished his semifinal swim in under one minute. Scott Weltz, Mark Gangloff and Eric Shanteau all are within 0.07 seconds of one another for the second Olympic berth but are at least 0.49 seconds behind Hansen. If Hansen wins, it would be his third consecutive U.S. Trials championship.
Women’s 400 freestyle (final): This is a field loaded with big-name talent. Chloe Sutton, Allison Schmitt, Katie Hoff, Kate Ziegler, Elizabeth Beisel and 15-year-old Kathleen Ledecky all have expectations of finishing in the top two. They won’t have much time to recover between their prelims and finals. The day session is projected to wrap up at 1:25 p.m., and the final will take place just over six hours later.
Men’s 100 backstroke (semifinals): This will be Lochte’s second swim of the day, but if he wants to rise from the lower level of the arena onto the medal stand like he did Monday night, he will have to catch a few people. Nick Thoman, David Plummer and Matt Grevers all have faster seed times — between 53.01 and 53.04 — than Lochte’s fourth-ranked time of 53.69. Also in the final heat with Thoman and Lochte is Nebraska native Adam Mania, who swam for Poland in the 2004 Olympics.
Women’s 100 backstroke (semifinals): Allow me to make this introduction. Missy Franklin, Omaha. Omaha, Missy Franklin. Missile Missy makes her debut in these Olympic Trials in Tuesday’s prelims (the first event of the day program but the last one on the evening card). She is seeded second behind Coughlin, while Rachel Bootsma and Elizabeth Pelton also are expected to be in the mix for the best lanes in Wednesday’s finals.