Maybe not relevant but Spurs are 5-0 in Finals Game 5s:
98-99, Won in NY 78-77 (clinched series 4-1)
02-03, Won in NJ 93-83 (went up 3-2)
04-05, Won in DET 96-95 (went up 3-2)
12-13, Won at home v MIami 114-104 (went up 3-2)
13-14, Won at home v Miami 104-87 (clinched series 4-1)