The phrase "presentable chances" refers to opportunities or options that are suitable or acceptable in appearance or quality. It means having choices that are decent and respectable. Full definition
Both teams spurned a number of presentable chances, with the hosts striking the woodwork on two occasions in the first period and United goalkeeper David de Gea made several impressive stops at the other end. (skysports.com)
Though they weren't seeing as much of the ball, Chile's attacks remained threatening, and they carved out two more presentable chances before halftime. (sbnation.com)
It's weird because I thought Mustafi and Holding played well, so too Kolasinac (looking much more like his beginning of season variant that we had expected to see more of than we have of late), but we still gave up some very presentable chances. (suburbangooners.com)