I was the first one off the tee box , yesterday. I played as a single. I'm fast.....and I had something to do, later -- . I'm on the first green putting + i look back -- two guys on a cart are teeing off. . I get to the next fairway + these guys are on the second tee.........I'm thinking "These guys are fast ! I was gonna drop another ball and practice some shots - not now. I'm putting on the green + these guys are on top of me. . I hustle to the par 3 Tee box - and consider letting them thru cos I don't feel like hustling, today. . I'm now out of their sight....the course geography allows this. I finish the 3rd hole + tee off the 4th box. I don't see these guys again..... and I'm definitely not "hustling" anymore ! .\ So I started wondering .... Were those guys trying to keep up with me or overtake me ? And as soon as I was out of their vision -- their pace slowed down....because my pace slowed down, as well. . Was it some kind of "herding mentality" ? Or a challenge to them - to stay up w/ a "single" ? I think it was a bit of both cos once I was out of their sight they definitely slowed down. Maybe they were "shot out of a cannon" + realized they didn't have to play that fast ? . I didn't see them the rest of the round and I had to wait on a couple holes for the worker to cut new pin -placements. . It was bit weird. I was actually gonna let them thru -- just didn't like their speed of play. I play fast......but this wasn't enjoyable.... until I parted ways....."Out of sight - Out of mind" ?