Olympic Swimming Trials event-by-event outlook for Monday night

OMAHA — An event-by-event look at Monday night’s Olympic Swimming Trials semifinals and finals session (8 p.m. ET, NBC and NBC Sports app):

Women’s 100m Butterfly Final

Olympic champion Dana Vollmer, coming back from March 2015 childbirth, and Kelsi Worrell are massive favorites to secure the two Olympic berths. They were nearly one second faster than the rest of the qualifiers from Sunday’s semifinals.

Men’s 200m Freestyle Semifinals

Ryan Lochte, groin injury and all, actually swam faster in his preliminary heat Monday morning than he did in the same race four years ago. He safely qualified fifth into the 16-swimmer semifinals but said he was still in pain. The top eight between two semifinals…