Normally, expectations for the future can be set by examining the past, but Budaj's achievement is almost without precedent.
Going back to the 1967-68 expansion and identifying goalies who had established themselves as starters, then spent four or five seasons outside the NHL or as backups before re-establishing themselves as No. 1 goalies in their 30s produces a list of four: Ron Low of the New Jersey Devils in 1983-84, Bob Essensa of the Edmonton Oilers in 1998-99, Brian Boucher of the Philadelphia Flyers in 2009-10 and Curtis Sanford of the Columbus Blue Jackets in 2011-12.
These four goalies played an average of 38 more games before leaving the NHL and/or retiring. Essensa remained a No. 1 goalie for two more seasons, but did so by changing teams each summer. That may be exactly what Budaj will have to do.
Regardless of what the future holds for him, Budaj has opened the door for other goalies to receive similar opportunities in the future, such as Jonas Gustavsson of the Edmonton Oilers and Michael Leighton of the Carolina Hurricanes.
Based on Budaj, the key is to find a former No. 1 goalie performing well in the American Hockey League. In 2015-16, Budaj had a .932 save percentage, a 1.75 goals-against average, and a record of 42-14-4 for Ontario, the Kings AHL affiliate.
There's not a lot of AHL data with which to judge Gustavsson, 32, who has averaged 13 NHL games per season for three different teams in the five seasons since he played in 42 games for the Toronto Maple Leafs in 2011-12. He has an AHL career save percentage of .928 in 20 games.
AHL success draws attention to Leighton, who will be 36 next season and was the No. 1 goalie for the Chicago Blackhawks in 2003-04, then went 16-5-2 during the regular season and 8-3 in the Stanley Cup Playoffs for the Philadelphia Flyers in 2009-10. Since the start of the 2014-15 season, Leighton has a combined .919 save percentage and a 2.32 goals-against average in 111 AHL games, with a record of 61-28-12. Could he be next year's comeback story?