Observations and other notes of interest from Monday’s 101-93 loss to the Memphis Grizzlies: – It appeared the Grizzlies were doing the Heat a substantial favor by sitting out Ja Morant, Jaren Jackson Jr. and Desmond Bane, among others. – Such are the luxuries a team can afford on the second night of a back-to-back when near the top of its conference. – A luxury the Heat now can’t afford when they play the second night of their back-to-back Tuesday at home against the Pistons. – Because, after finding a way to lose to the Grizzlies’ B Team, it has to be go-time for Erik Spoelstra’s team. – With a schedule that, after this four-game trip against the Hawks, Celtics, Celtics and Grizzlies, grows increasingly in the Heat’s favor. – Over the Heat’s next 11, there is only one opponent considered anything close to a title contender. – And that’s Thursday at home against a Clippers team that has been dealing with the injury absences and returns of Paul George and Kawhi Leonard. – Otherwise (with all records going into Monday), there are the 6-19 Pistons, 6-18 Spurs, 12-11 Pacers, 10-13 Thunder, 6-17 Rockets, 6-18 Spurs again, 9-14 Bulls, 12-11 Pacers again, 11-12 Timberwolves and 10-12 Lakers, before beginning a five-game western swing that extends over New Year’s with a game at the 14-9 Nuggets. – In other words, if not now, then when? – This was a bad loss. – Even if it did come after eight days on the road. – Again, there is little margin of error for such a performance. – The Heat opened with Bam Adebayo, Caleb Martin, Jimmy Butler, Tyler Herro and Kyle Lowry. – Making it the first time they opened consecutive games with their preferred starting five since Oct.