Found this about Kerr and Horry...
Steve Kerr and Robert Horry, another famous reserve player and clutch shooter, alternated NBA Championships for a decade, and combined to win 12 championships over a 14-year period. Either Kerr or Horry was on the roster of every NBA Championship team from the 1993-94 season through the 2002-03 season. Kerr's teams were winners in the NBA Finals in 1996, 1997, 1998, 1999 and 2003. Horry's teams were victorious in the NBA Finals in 1994, 1995, 2000, 2001, 2002, 2005 and 2007. Each won 3 les playing for Phil Jackson-coached teams (the Lakers and Bulls), and every other championship with a team from Texas (the Spurs and Rockets).