Vote 1 - George Gervin
Vote 2 - Paul Arizin
Nomination 1 - Willis Reed
Even though Gervin's playoff success leaves something to be desired, he was still an impressive playoff performer, putting up the following from '75-'83 (65 games):
28.8 PPG, 7.2 RPG, 3 APG, 1.2 SPG, 1.1 BPG, 56% TS, 113 ORtg
In '79, the spurs faced the defending champion bullets in the ECF, with a heartbreaking 2 pt game 7 loss. Gervin scored 42 pts in the game, including 24 in the 2nd half. The spurs and bullets ranked 1st and 2nd in SRS respectively that season.
In '82, the spurs made a mid season trade for talented scorer Mike Mitchell. He would only appear in 57 games for the spurs, and gervin still led the spurs to the 7th best SRS in the league. For context as owly mentioned, Ron brewer was pretty productive that season before being traded for Mitchell:
https://www.basketball-reference.com/teams/SAS/1982.html. They would fall to the eventual NBA champion lakers (4th in SRS) in the WCF.
In '83, the spurs (6th in SRS) would again fall to the lakers (3rd in SRS) in the WCF. Gervin and Mitchell both had solid performances in the post season that year, but simply weren't enough for a deep lakers roster that featured magic, kareem, nixon, wilkes, mcadoo and cooper.
Had gervin and gilmore had more time together during each other's primes, i'm sure both would have helped each other to further playoff success.