What do you guys think, who will secure those playoff spots?
For the West, I think Spurs will make it, I trust coach Pop in crucial situation like this, then they will upset the Lakers. 
Here is another bad news for the Spurs, which will cost them this season.
LaMarcus Aldridge underwent arthroscopic procedure and rotator cuff debridement on his right shoulder in April and it’s announced that he will miss the remainder of the 2019-20 season.
https://www.google.com/amp/s/www.poundingtherock.com/platform/amp/2020/6/8/21284396/lamarcus-aldridge-undergoes-shoulder-surgery-will-miss-the-remainder-of-the-season
San Antonio is 27-36; 5 games out of the 8th seed. So their chances became even slimmer.
I think this is a nice start for him if he got hired as a coach for the San Antonio Spurs. He can prove to everyone what he really got on coaching the team. Unlike Derek Fisher and Jason Kidd, Tim is starting to coach in his past team since the other players know him so well they will surely have strong bond together.
Tim Duncan will eventually become the head coach for the Spurs, he's just waiting for his turn, as well as learning the ropes beside Pop as an assistant coach. Infact, he already had his head coaching debut
https://www.google.com/amp/s/www.nba.com/amp/league/article/2020/03/03/spurs-tim-duncan-make-head-coaching-debut when Pop was out and It went well for him.