Traps happen when the team you’re guarding gets stuck in the corner or picks up their dribble without a plan to pass or shoot the ball. Iowa is a well coached team that works hard on not getting themselves into those situations. With that said, UConn did trap yesterday, whenever those opportunities arose, forcing several turnovers.
Fronting the post is a highly risky defense. In fact, many posts try to get defenders on their back, facing the basket (fronting the post) resulting in an easy entry pass and layup. That happened several times yesterday with Iowa post players. One of the very best at it is Sarah, who will get a player on her back, lock her there, turn to the basket and receive an entry pass for an easy layup.
There are only a handful of defenders I have ever seen who are consistently effective when attempting to front a post. The best was Gabby Williams. While she is only 5’11”, Gabby’s incredible athleticism and jumping ability allowed her to front a much bigger post and still get her hands on most entry passes.
You mention the game against UCLA last year. UConn did not play Betts the same way all game. I wouldn’t call what Jana was doing “ fronting.” She was overplaying to one side, with her arm extended to try to get a hand on entry passes. UConn also doubled and tripled Betts whenever she put the ball on the floor. In the first half, UConn was very effective against Betts as the Huskies built a big lead. In the 2nd half, not so much, as Betts ended the game with 26 pts.