MINNEAPOLIS, MN - MAY 10: Stephon Castle #5 of the San Antonio Spurs shoots a free throw during the game against the Minnesota Timberwolves during Round Two Game Four of the 2026 NBA Playoffs on May 10, 2026 at Target Center in Minneapolis, Minnesota. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this Photograph, user is consenting to the terms and conditions of the Getty Images License Agreement. Mandatory Copyright Notice: Copyright 2026 NBAE (Photo by David Sherman/NBAE via Getty Images) | NBAE via Getty Images Spurs guard Stephon Castle posted a video of his summer workout. Shooting… the focus for @StephonCastle this summer with trainer Olin Simplis! pic.twitter.com/T2aVLnd8cB— NBA (@NBA) August 25, 2026 The post starts with Castle responding to this question- “What’s been your focus this summer?” His response is that shooting has been a top priority. While working on his shot, he is refining his rhythm. From there, trainer Olin Simplis takes over explaining what Castle is doing. “Working his pickups off his dribble off the deep ball his gather his shot line.” Simplis is described here on the “About” page of his Guard Whisperer site: “Olin Simplis is not just a trainer. He is a development architect. His work sits at the intersection of skill, psychology, biomechanics, character, and pro-level preparation — built across three decades of work with NBA professionals, WNBA champions, NCAA standouts, and elite prep talent.” Simplis referred to Castle as “the best perimeter player” in a recent interview, praising his constant improvement and conditioning. Welcome to The Thread. Join in the conversation, start your own discussion, and share your thoughts. This is the Spurs community, your Spurs community. Thanks for being here Our community guidelines apply which should remind everyone to be cool, avoid personal attacks, do not troll and watch the language. ...read more read less