Things get out of hand when Stephanie's new boyfriend, Hunter Pence of the San Francisco Giants, invites everyone to one of his baseball games. Matt asks D.J. to date him. Later on, Steve returns and tells D.J. that he's still in love with her. This leads to Steve and Matt fighting over D.J.
- Scott Weinger as Steve Hale
- John Brotherton as Matt Harmon
- Ashley Liao as Lola
- Hunter Pence as Himself
- Brad Grunberg as Fan
- Derek Viveiros as Vendor
- Jeff Redlick as Baseball Fan
- Steven Wiig as San Francisco Giants Security Officer
- The episode title is taken from Neil Armstrong's famous quote from the Apollo 11 moon landing: "That's one small step for a man, and one giant leap for mankind."
- This episode was filmed during the October 1, 2015 game against the Los Angeles Dodgers in which they won 3-2 over the Giants.
- Hunter never actually played in the October 1 game against the Dodgers due to suffering a season ending left oblique strain.
- In real-life Hunter was dating his now-fiancee Alexis Cozombolidis at the time the episode was being filmed. He later proposed to her on December 3, 2015.
- Stephanie and Kimmy snooping in on Steve and D.J.'s kiss was similar to that of the mothership's "The Prying Game".