I thought I could trump that 20 LOB mark with a game from my dynasty, but checking revealed that my Raccoons merely left 19 on base in a 9-inning affair last season.
Team LOB: 19
Individual LOB: 38
Still won 3-1 thanks to gritty pitching, the SP bringing in the tying run on a groundout and my franchise poster boy the only guy to actually have a clutch hit with a 2-run single.
Yeah, 19 LOB is merely for starters. We can do better, I'm sure.
Also once had a 9-inning game where my pitchers surrendered 19 walks - a mark unmatched in the majors leagues since 1887 or so. We didn't quite win that one.