Point Guard - Dejounte Murray
Dejounte Murray is not a great three-point shooter (yet) which, in this case, hypothetically helps this argument. Shooting from deep requires dancing around or making cuts to get open. Murray is more of a John Wall, running through or around people with his speed to get to the basket.
On defense, his length and arm strength allow him to disrupt passing lanes and rip the ball away from other guards. He is also a very good rebounder for his size, which I attribute to his leaping ability and his scrappiness, both of which earn him points in this spot.
Purely in terms of athleticism, Murray is one of the better point guards in the league. Having him run the floor for the athletic Spurs puts them in some of the best hands possible.
Shooting Guard - Lonnie Walker IV
Lonnie Walker IV could easily be a good spot-up shooter, and if that's the role he ends up playing for the Spurs next season, I wouldn’t be disappointed. However, for this, I’m asking him to run and jump.
Luckily, he’s very good at both. At the 2018 Draft Combine, he had a maximum vertical leap of 40 inches, which was the 10th best at the entire combine. Lonnie can jump, dunk, and block.
Ideally, this team would excel by sprinting on fast breaks and throwing lobs for each other. Walker can throw up on-target passes for alley-oops, and he can certainly catch and finish them. He and Murray can run a blistering transition offense that will likely almost always result in two points.
Even then, though, he wants to somehow become even more athletic. He still looks back in regret about missing what would have been a SportsCenter-worthy dunk against the Denver Nuggets a couple of seasons ago.