Gregg Popovich coach 88 Parker became a 6x All-Star. Ginobili 2x. Leonard developed into a Finals MVP and superstar under Pop. Red Holzman coach 72 Developed Reed, Frazier, DeBusschere, Bradley into All-Stars under his system Erik Spoelstra coach 72 Bam became an All-Star. Jimmy Butler performed at All-Star level under Spo. Moderate All-Star creation. 4 Larry Brown coach 70 Iverson became an MVP. Billups made All-Star teams. Multiple players reached new heights under Brown. 5 Chuck Daly coach 68 Rodman, Dumars both made All-Star teams under Daly. Isiah was already a star but reached MVP-level play. 6 Jack Ramsay coach 65 Bill Walton flourished under Ramsay; developed several players into All-Star caliber 6 Don Nelson coach 65 Baron Davis All-Star under Nellie. Dirk early development. Tim Hardaway in Golden State. Moderate output. 8 Steve Kerr coach 62 Curry was already trending up. Klay and Draymond made All-Star teams under Kerr but were already good players. 8 Quinn Snyder coach 62 Mitchell became All-Star and MIP-level under Snyder; Gobert DPOYs during tenure 8 Tom Thibodeau coach 62 Joakim Noah, Jimmy Butler became All-Stars under him; Jalen Brunson elevated with Knicks 11 Jerry Sloan coach 60 Stockton and Malone were perennial All-Stars under Sloan. Deron Williams made 3 All-Star teams. Moderate output. 12 Brett Brown coach 58 Embiid and Simmons both became All-Stars during his tenure; guided their early development 13 Pat Riley coach 55 Most of his players were already All-Stars or close. AC Green and Byron Scott benefited but were solid already. 13 Kenny Atkinson coach 55 DAngelo Russell became All-Star under Atkinson; developed Spencer Dinwiddie into starter 13 Phil Jackson coach 55 Coached existing All-Stars rather than creating new ones. His talent was maximizing established stars, not development. 16 Terry Stotts coach 52 CJ McCollum became MIP and borderline All-Star; Lillard was already established 16 Ime Udoka coach 52 Jayson Tatum and Jaylen Brown elevated under him; both were already All-Stars though 18 Stan Van Gundy coach 50 Dwight Howard was already a star; Rashard Lewis made All-Star under SVG 19 Doc Rivers coach 48 Rondo became an All-Star. Most of his stars (KG, Pierce, CP3, Harden) were already established. Limited development. 20 Monty Williams coach 45 CP3 and Booker were already stars; did not create new All-Stars 21 Rick Pitino coach 35 Limited NBA tenure; few players developed into All-Stars under him in pros 22 Tom Izzo coach 30 Prepared Draymond Green, Jaren Jackson Jr, and others for NBA; but in college not NBA 22 Darvin Ham coach 30 LeBron and AD were already established stars; Austin Reaves improved but not All-Star level 24 Sergio Scariolo coach 25 Limited NBA tenure to develop All-Stars; Marc Gasol and Rubio thrived under him internationally 25 Mike Montgomery coach 20 No All-Stars developed during very brief NBA tenure