We briefly see the back of Billy's underwear as he gets undressed while preparing for the game.
Jane mentions that people should have signs around their necks to describe themselves and includes "horny" as an example (but not meaning for herself).
We see Billy and Jane passionately making out in an elevator and then see her in his bed the next morning (under the covers), implying that they had sex.
Discussing their amorous encounter, Jane states that "I don't do that. Not since I was in college. I just don't screw like that."
When describing herself as plain, Jane says that she doesn't wear sexy underwear because it's really uncomfortable.
We see Billy lying on a massage table with only a towel covering his crotch. Later, and as Jane unexpectedly arrives at his place, we see that Billy's masseuse spent the night with him (and we see that woman in her high-cut underwear).
As Jane explains that she can't be a baseball groupie, she states that she can't just come down to spring training, get a player's autograph and "sleep with Mr. Right Guard (Billy)."
Jane shows a bit of cleavage.
Heather asks Billy if he's her mom's boyfriend, he responds "I'm not sure" and she replies, "But you've slept with her?" He just smiles and then tries to change the subject.
We learn that Jane had Heather when she was just sixteen.
Billy and Jane do some more passionate making out (but fully clothed and standing). Later, we see them in bed under the sheets with her asking him, "What are you doing down there?" It turns out he was retrieving a flashlight and we don't see anything sexual occur, but when she jokes, "It's not mine," he replies, "Oh, you mean it doubles as a flashlight?" as he crawls on top of her (presumably making a reference to the flashlight being a vibrator).