Rule #1 when recording ANY sporting event on TV: Always add the time equivalent to at least 1 "period" of normal game segment. Here is my breakdown per sport:
For Hockey, add 1 hour (equal to about 1 full period)
For Basketball, add at least 30 minutes (allows for at least 1 OT in College and NBA)
For Baseball, add at least 30 minutes (allows for at least 1 extra inning, maybe two with good closers)
For NFL, add at least 30 minutes for "sudden death" OT
For CFB, add at least 30 minutes for "alternate scoring" OT
For Soccer (especially for championship games), add at least 1 hour to allow for 2 15-minute periods, plus some time for PK's.
For NASCAR (or other racing), I am not really sure, but I added 1 hour to the Indy 500 and CocaCola 600 this weekend and was able to see them both in their entirety.
And for any sporting event that might be affected by severe weather delays, always consider adding another step up on the option scale.
If you do this each time you want to record a game, you will not even notice the extra effort it takes to pad the game as it becomes second nature. And you will rarely be upset that you missed the final 5 minutes of an event. Not picking, just offering the advice that keeps me from drinking too heavily.