The use of jersey number zero and double-zero is strictly prohibited across the National Hockey League primarily due to administrative, software, and database technicalities rather than traditional superstitions. In the early decades of professional hockey, a few goalies—most famously Martin Biron of the Buffalo Sabres during the 1990s—briefly experimented with wearing 00 before league operations updated their official registration systems. The central league database, statistical tracking software, and computerized scoring systems were originally programmed exclusively for standard one- and two-digit numbers ranging between 1 and 98, alongside the universal retirement of number 99. Because accommodating zero and double-zero created unnecessary software complications for roster tracking, official box scores, and historical record-keeping, league executives opted to ban zero entirely from official uniform rosters.