Higgins (Jeremy Swift) and his wife (Mary Roscoe) are actually married in real life and have actually been married for 29 years (m. 1992) like mentioned in the show.
When Ted is trying to recruit Roy to help coach in the alley, he quotes When Harry Met Sally, Jerry McGuire, Notting Hill, and Princess Bride. This went along with the whole rom-com theme of the episode.
Higgins refers to a mail he received from Ryan Reynolds and Rob McElhenney, new owners of AFC Wrexham. This refers to a YouTube video they shared about the purchase of the Club and as Higgins points it out, the mail and the video were unclear, if they are joking or not.
The elderly fans who break the fourth wall are named Harold and Megan; their taking turns in telling their love story is a When Harry Met Sally reference, in which Sally was played by Meg Ryan
The owl joke Coach Beard reminds Ted about is from Season 1 when Beard and Nate are ignoring Ted over Roy playing or not.